direct product of groups number of elements of order n in Zn Z15xZ5 direct product in group theory
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direct product the number of elements of order n in Zn is phi(n) Z15xZ5 group theory BHU PET 2019
tag 23072021
19. The number of elements of order 5 in the group Z_15×Z_5 is
(a) 16 (b) 24 (c) 8 (d) 4
En BHU PET 2019, 19
Key (b)
amazing video......"if d is a poisitive divisors of n ,then the no of elements of order d in cyclic group of order n is phi(d)" this theorem is applicable on Z because it is cyclic then in case of U,S6 it wiil apply???
Also (1,5) is not an element in this group, is it?
Thank you sir
You're welcome
Sir ans a mark pannunga plz
How(5,5) is possible
What will fhi(9) be sir, want to know.
6
3² -3¹ =6
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How to find pi(d)=4
Absolutely right
Sir ye jo 1000 groups ke mcq hai kya ye csir net ke liye enough hai
Yes
Good sir but am still having troubles how fhi(5)=4
There is a formula to find phi(n),
5¹ -1
thanks sir
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B is the ans
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