Aptitude Made Easy - Easy way of finding unit digit? - Common topic in Bank exam,Math tricks
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Remember this 3 lines
1.Last Digit of a num =0,1,5,6 ; Unit Digit will be 0,1,5,6 (For any power)
2.If Last Digit of a num =4,9 and Power is odd ; Unit digit will be 4,9 ; if Power is even Unit digit will be 6,1
3.if Last digit of a num =2,3,7,8 ; Devide the power by 4,
if Remainder=0 ; Unit Digit will be 6 for 2 & 8 ; 1 for 3 & 7 ; if R !=0 Unit Digit will be (last Digit)^R ;
Dear ma'am please pinned the comment about when l = 3,7 or 9 the unit digit is 1 instead of 0 👍
For example : 143^124
By dividing 124 by 4 the remainder is 0. In this case we can take 3⁴=81. So the unit digit is 1. 🙏
Thanks
Haa bahi 1 hoga
How 3 power 4 came
@@Randomi657Acha se theko. Ya formula hai
l^n for finding last digit😊
Please edit your video that in the case of l=3 or 7 or 9 if remainder is zero then unit digit will be 1, not 0
Ratnakar Singh correct
Correct
Yes you are correct
thanks a lot bro....
Yed
Thankyou ma'am for amazing explanation!🙏Just need to correct unit digit as 1 in case of l = 3,7,9
Yes bro.. You are right
Thank you for telling
Yes....This had me wondering for a couple of minutes
what does it mean? please explain it better!
start from 1) If the last no is 1 the cyclicity is?
2) And in case the last digit of 1 remainder is 0 then the unit digit is?
Please explain sir.
@@shashangkipgen6065
They are basically square, cube etc,
So 1² or 1*(to the power anything)willl always be one.
Same goes with 0.
1. 1
2. 0
LEGEND SAYS THAT SHE IS STILL SAYING (NOTHING BUT)
Lol
I have a simple trick
Last two digit of power divided by 4
Answer will be unit digit to the power reminder.
For reminder 0 take 4.
You are an excellent teacher! Thank you very much 🙂
No offense but i m just curious
Aap abhi kaunsi job krrhi hai?
thanks for the explanation but please make the correction-
* if the remainder is zero and l = 3,7,9 the unit digit is 1
* 6^anything always ends by 6 ; also, 5^anything always ends in 5
if the remainder is zero and l = 3,7,9 the unit digit is 1
Thank you so much really. Also thankyou commentators that am able to unlearn and relearn the UD as 1 for l=3,7,9. Thanks a lot world. huge thanks.
Are you preparing for government jobs? Jean
Just when i lose hope nd start thinking that i cant do ...... ur way of teaching acts as a positive vibe ......that yes I can do🙂
Exactly what I thought
6^anything always ends by 6 so not only for 5 but also 6 has exception ..🤔
Yeah that's too an exception
Yup yup agreee
"0,1,5,6" All these are Exceptions. For all of them, there won't be any change. i.e., Units Digits will be 0,1,5,6 only.
It is basically not an exception but a fundamental property of 6 and 5.
Wrong concept for 3,7,9 if the power is 0....it should be equal to 1
A big thank you to South India from North India! I love the fact that every state has it's own accent of speaking English and I can actually guess you belong from South. Thanks a ton!
Hi
Yeah because her accent is South Indian
Professionalism nd mannerism in your teaching 👌👌
Yes ...hii
So true
you forgot to add beautism
but for, l = 3, 7, 9 U.D should be '1' not '0'... see ^4 column also.....
Error:for digit 9
Solution:if units place is 9 and if the power of 9 is even then units digit will be 1 and if the power of 9 is odd then units digit will be 9
mam when remainder is zero in case of 3,7 ud is 1, in my calculation
But isn't the unit digit for 3,7,9 actually 1 when the remainder is 0? I believe I learned when the remainder is 0 it is automatically the 4th position in the cycle, which would be 1 for 3,7,9. Just curious if I am understanding this correctly.
I was looking for this comment to conform if I was right. Yeah, you are right. She must have made a mistake.
U make understands soo fast we hardly get anything to understand bt all knowledge is good thnq man
This is nothing but useful video😂😂😂
Thank you madam .this video helped me a lot to understand this topic clearly. i am very greatful to you madam. All your videos are easily understandable the large digits(3,7, & 9) then the unit digit will be 1.
Yeah aur ye galat likha tha unhone
*Greatful
Who is here for kvpy
in the third sum, since the cyclicity for 6 is always 1, can't we directly write the unit digit as 6? Because for 5, we did it directly!
Ya
Cyclic of 6 is always 6
You can kaviya
Ma'am plz🙏🙏🙏🙏 tell the proof...if last digit is 3,7,9 and remainder is 0 then,unit digit will be 0
Bro I have same dought
If unit digit of any base is 0, 1, 5 or 6 then unit digit of each of index remains same. No need to calculate again.
Mam can we not solve this type of question using tricks i.e skipping the formula part.....it's very confusing 😖
before watching this video....
I just wanna say mam You are so beautifull .
Ab to video achi ho ya na ho usse mujhe fark nhi pdta😆😆😆😆.....
Aap bade pyare lage.... Ok ab video dekh lu thoda.... Mujhe yakeen h video bhi achi hogi😁😁😁💓💓💓😋😍
All I understood after beautiful was......
Blah blah blah blah blah😂😂😂
she says "L" as "YEL" 2:59
Amazing trick!! I learned a little of this in an online platform to some understanding, but not knowing the table I had to do it each time. This is great! I literally tried watching a different one before this and the tutorial was incorrect based on what I learned before and what I am seeing here.
Thx mam I am trying for CHS ( entrance exam for class 11) Nd could not understand this types of question ,. But after your video my doubts were clear
Great work mam ! But if someone don't want to remember the table then only :-
1.divide the power by four
2.last digit of no ^remainder
You get your unit digit .
Note:- in case of zero remainder :
Last digit of no ^4 gives you correct unit digit
Thank you bro ❤ . If u know more tricks of maths please share with me
It has helped me😊 .
Thanks
When Remainder is 0. L is 1, the unit digit will be??
whatever be the power for one is 1
OMG! You are so demn pretty
Mam okavela bracket untee ela cheyaliiii chepandi pls (4137)^754
Its the same process
This is nothing but I like you 🙈😍
😂😂😂
Hehe 😂😂
please correct this video, unit digit for 3,7,9 will be 1 at 5:50 . How can it be 0 ????!!!!!
Bro that is in the case of you have reminder as 0 (power divided by 4)
Amazing tricks super and ur are way of teaching is tooo good, love it, ur looking tooo good and very beautiful
Biscuit and chocolate 😋 😊
Friends it's not accurate method, don't go blindly,Check once
Wrong concept for l=3,7,9 with r=0..in such case u.d will be 1..except this everything is correct
What if L=1? what is the cyclicity of 1? why it's no given in the table?
@@revanthkumarchiruvolu3503 for 1 to any power, the last digit is always going to be 1 so no trick there.
@@revanthkumarchiruvolu3503 for cyclicity is 1 only, any power to 1 unit digit will be 1 only
For 33^6 ud is 9
This rule is not applicable for 9 if reminder is 0. Please don't tell without knowing
i didn't get your point ... please tell me your question where this formula didn't work !!
Today is my exam I don't know the unit digit in even numbers thank you so much 😄😄😄😃
3 , 7,9 ke case me unit digit 1 hoga if remainder will be zero
🙏🙇
But for 33^6 ud is 9
really helped me...thanks!
🙃 answer is done .........
But why?????? ....maths needed proofs 🙄🙄
I was solving all questions of R.S. agarwal and stuck in this type of math..I thought It is higher level of math and left all questions of this types...but after watching this video Ma'am made this a piece of cake for me.. thanks ma'am.
3 power 28
Not working
Correct answer is 1
Mam the way you teach is amazing and you look beautiful too.
Correction*
L = 3,7,9 then U.D.= 1 (not 0)
Excellent video, and to think today was my bba entrance and l was gonna leave this topic, but mam u were a lifesaver, thank you so much!!!!
did u pass?
Please stop saying "nothing but"
🙏🙏🙏
That's called beauty with brain...👌👌👌👌👌👌
In this video Mam is saying When r=0 then we have to check l=3/7/9 and put Unit Digit 0.
Ok find unit digit of 3 to the power 8.
Firstly, through this trick and then check using calculator.
It will not be similar.
Comment isn't it?? 🕵️
Great style of teaching 👌 👍
Thank u so much ma'am 😄😄
Hello ma'am, your teaching method is so easy.. Mam could you please teach us *CALCULUS* .. I 'm from chandigarh, & i 'm preparing for ssa chandigarh exam for TGT maths post. Please mam please please please.
Nothing but 😂🤣
I know another formula for it .[ 0,1,5,6] Rule- always same .
[3,7,9] Rule- if power divided by 4 then unit digit is always 1 .
[2,4,8] Rule - if power divided by 4 then unit digit is always 6.
🙏🙏🙏
Please come up with a video and explain more
Dont know what to say, when i was gone through one of the books after reading it i was wondered. But within 6 minutes u give me the idea to solve .thank u teacher
In your every video u made lots of mistakes please correct them
So funny...... Yel... L🤣🤣😂😂😂🤣😁
Quite helpful, but please let me know the cyclicity of 1
621^72
I love you baby really amazing, thank you very much, I like your way of teaching and Voice
For 3, 7, 9 how you get zero as a last digit for the case of remainder zero.
IT IS 1
Wonderful class sir :) For all competitive subjects.. I like Vidya Guru sessions as well. Their all sessions are really exam relevant
blind?
😝😝😠😡🧐🧐🤔🤔🤨🤨what was this....🤨🤔🧐😠
Amazing Video.. :)
In the last question:
Don't you think that "every power of 6 also ends in 6 only", so the unit digit will be 6 only?
Hence we can directly write "6" as unit digit of 2016^(2015)
yo bro
l=3,7,9 hone par unit digit is 1 if r=0
Agar last ma 1 ho too
Bhai agr 0,1,5,6 he unit digit pr to result ka unit digit bhi wahi hoga... It's remain unchanged
(1827)^16 unit digit 7 then cyclicity 4 then 16/4=4 and r=0 but answer is not 0 as L=7. I don't understand pl help
The right value for the 2nd case is 1, not 0. It should be a written error by the presenter.
Great job madam.
Nature of explaination is good.
You are telling in very simple english that all understand easily.
We are grateful to you.
Mam according to your trick, unit digit of 9^26 is 0 but it is not..........
Please explain us if it is an exception.......
..
A beautiful lesson, taught by a BEAUTIFUL teacher.
JeswanthReddy
when last digit(L=1)....then, what is the cyclicity......if,cyclicity is 1......what i do
It's cyclicity is 1 only, any power to 1 unit digit will be 1 only
She is nothing but a excellent teacher👍
ma'am, I have a doubt what if l=1...?
Thank you so much for this mind blowing explanation ☺️☺️
Thank you so much beautiful teacher
Have to replay it again and again. After 20-30 seconds I lost in her eyes everytime.
Please tell is this method is correct or not
Give the no. 1 2 3 0 to the cyclicity of 4 and as per reminder we get unit digit also for o reminder.
Ex. 2^64. R=0, so unit digit 6
Ex 7^64. R=0. So unit digit 1
7^ 45. R=1. Unit digit is 7
For cyclisity of 2= 1 0
Ex 4^30. R=0. So unit digit 6
me too
sImP
Not able to concentrate on board.
Aapse nazar hi nahi hatt rahi🙊
thank u for this wonderful lecture
Mam will you have another method to solve this
Mam thoda hindi b bol deti mere sir ke upar se jane lga h to
Mam you made this topic very very easy for me... by the way I am a tenth grader and I really found it difficult to solve this question thanks alot mam....😍😍🥰🥰🤩🤩
Thanks a lot! Great trick, Just make the correction for (3,7,9)^0; UD = 1 and not 0.
Bro can you reply how that 1 come bcoz I'm a starter in aptitude.
Can u pls provide video to find integer values
Find the unit digit of 222^15 + 333^16 + 4444^17 according to you taught u told the ans for this is 2 but the right answer for this question is 3 mam can u explain how this answer came
but ma'am what if the reminder of power % cyclicityOf(lastNumber) ==0 && last digit belongs to (1 || 0) ?
please if anyone have clearity about that make me clear about it...
Here , I am nothing but just a human 😄
4.28 according to every website and your concept my answer is 1 but your answer is 6. Please look after it
U r too fast mam
We r not genius like you
If there is a double powers, then how could solve. Ex:(45^343)^587.
And also factorial type problems.
Then multiply the powers.
For example (2^2)^2 which is 2^2x2 = 2^4
Mam ur language accent reminds me tamil language
Yes, In case of remainder 0, if unit digit of the given no. is 3, 7 & 9 then the resultant unit digit should be 1 not 0. It has passed 6 yrs and no correction made?
LD=3,7,9 if r=0 then UD=1
Not zero (0)
yeah you are right
Madam your logic is wrong for the remainder is 0, instead, we can follow whenever the remainder is 0. The last digit of the expression will be = (unit digit of the expression)^cyclicity.
maam your explaination is very simple and easy to understand . i have wasted 1 hour in this topic by seeing other videos but you made me understand within 6 min
Hope our video really helped you. We have also made a lot of other aptitude video please check out playlists.
The unit digit for 3,7,9 is 1 and not 0 if remainder is zero..... This was a mistake...Otherwise I found this lecture very helpful❤❤
9 to the power of 2 is 81 so unit digit is 1 but you say in this process below
= 2 /2 =0 so reminder zero so 3,7,9 reminder 0 the unit digit will be zero it's not correct explain mam
(43)^444 + (34)^333, according to the formulae in the vdo the ans is 4 but the ryt ans of this question is 5. plz give the solution of this question
Hi sis. I want to know the unit digit of: 3x38x537x1256. Pls reply me, how to solve it. If anyone knows also tell me
134647^552 for this ...in ur method I'm getting 0 but in guide its 1.....plz snd me the correct explanation for this question