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Q.

Consider the following statements

I) The number of non trivial even divisors of the number 2α1 3α2 4α3 5α4 6α5 is α1+1α2+1α3+1α4+1α5+1-2

II) The number of non trivial odd divisiors of the number 2α1 3α2 4α3 5α4 6α5 is (α2+α5+1)(α4+1)-1

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a

I is true, II is false

b

I is false II true

c

I is false, II is true

d

I is true, II is true

answer is C.

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Detailed Solution

I:   N=2α1 3α2 4α3 5α4 6α5

   N=2α1 3α2 22α3 5α4 2α5 3α5

=2α1+2α3+α5 3α2+α5 5α4

No. of non trivial even divisors=(α1+2α3+α5)(α2+α5+1)(α4+1)

 II:  N=2α1 3α2 4α3 5α4 6α5

  N=2α1+2α3+α5 3α2+α5 5α4

No.of odd divisors=(α2+α5+1)(α4+1)

No.of odd non trivial divisors = (α2+α5+1)(α4+1)-1 

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