Class 7 Practice Set 10 | Chapter 3 HCF and LCM | Std 7th Maths New Portion Maharashtra State Board

This Video explains Chapter 3 HCF and LCM - Practice Set 10 of Standard 7 for Maharashtra State Board.
7th Maths Playlist all Practice Sets - • 7th Maths Maharashtra ...
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Following questions of Practice Set 10 - Chapter 3 HCF and LCM have been explained in the video:
Question 1.
Which number is neither a prime number nor a composite number?
Question 2.
Which of the following are pairs of co-primes?
i. 8,14
ii. 4,5
iii. 17,19
iv. 27,15
Question 3.
List the prime numbers from 25 to 100 and say how many they are.
Question 4.
Write all the twin prime numbers from 51 to 100.
Question 5.
Write 5 pairs of twin prime numbers from 1 to 50.
Question 6.
Which are the even prime numbers?

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[@rabinaartcraft5422]

Factors of 27- 1,3,9,27
Factors of 15-1,3,5,15
Common factors- 1,3
Therefore 27 and 15 are not a pair of co-prime numbers

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[@YogeshSirsBackbenchers]

Keep Practicing!

[@akshatajogale5071]

27,15
Factors of 27-1,3,9,27
Factors of 15-1,3,5,15
Common factors-1,3
27,15 are not a pair of co-primes

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1:33 1:37 1:38 1:38 1:38 1:39 1:39 1:39 1:39 1:39 1:40 1:40 1:40 1:40 1:41 1:42 1:42 1:42 1:42 1:42 1:42 1:42 1:43 1:43 1:43 1:43 1:43 1:43 1:44 1:44 1:44 1:44 1:44 1:45 1:45 1:45 1:45 1:45 1:46 1:46 1:46 1:46 1:46 1:46 1:47 1:47 1:47 1:47 1:47 1:48 1:48 1:48 1:48 1:49 1:49 1:49 1:49 1:49 1:49 1:50 1:50 1:50 1:50 1:50 1:51 1:52 1:53 1:54 1:55 1:55 1:55 1:55 1:55 1:55 1:56 1:56 1:56 1:56 1:56 1:56 1:57 1:57 1:57 1:57 1:57 1:58 1:58 1:58 1:58 1:58 1:59 1:59 1:59 1:59 1:59 1:59 2:00 2:00 2:00 2:01 2:01 2:01 2:01 2:01 2:02 2:02 2:02 2:02 2:02 2:02 2:02 2:03 2:03 2:03

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Factors of 27- 1,3,9,27
Factor of 15- 1,3,5,15
Common factors is - 1,3
27,15 are not a pair of co- primes

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27 and 15 are not coprime number

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27,15
factors of 27- 1,3,9,27
factors of 15- 1,3,5,15
common factors -1,3
27,15 are nota pair of co-prime number

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Not a co-prime number

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[@geetakelavkar6619]

Sir the answer of 4th Question - 27, 15 Is not a co-prime number.

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[@khushi290]

iv] Co-primes

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Factors of 27- 1,27,9,3
Factors of 15- 1,15,3,5
Common factors -1,3
: 27,15 are not a pair of co-prime

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27 and 15 are not a co-prime number i solved on my own❤😊😮

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Commen factors (27,15) is not co-primes number

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27,15 are not a pairs of co- primes

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27 and 15 is vo prime number hai

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It is co-primr

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Sir the factors of 27 and15 is 27-1,3,9,27,15-1,3,5,15. Common factors is-1,3. Therefore 27,15 was not co-prime number.

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27 and 15 question

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27 and 15 are not co- prime , sir

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27,15 co -praim no

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27 and 15 are a not co-prime number

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Coprime nahin hai

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Not co prime

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No

[@6b15kanakyadav4]

Factor of 27 are 1,3,9, 27
Factor of 15 are 1,3,5 ,15
Common factor , one and three
27 and 15 is not coprime

[@nituchauhan9714]

Factors of 27=1,3,9,27
Factors of 15=1,3,5,15
Common factors is=1,3
=27,15 are not co-primes
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27,15 are not a co-prime number!!!

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27,15 is a co-prime number

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the answer of 4Q is 27,15 are not a pair of co-primes 😊

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[@bhumikajagtap3866]

27-1,3,9,27
15-1,3,5,15
.
. . 27 and 15 not are a co-primes numbers

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27,15 [ not Co-prime no. ]

[@h.d.s.gamerz2243]

27,15 are not co-prime number because he has 2 Common Factors.

[@sandeepgajbhar4192]

(iv) 27,15 is not a Co-prime nomber