Doubt clear

CPT 489 views 2 replies

the minimum assigned value of x for which the expression X^8/512 will be an integer?

a).-2, b).-3, c).+-3, d). +-4.

Replies (2)

i think it is a) -2

sorry it is d) + - 4

bcoz  (x^8)/512 = (x^8)/(2^9)

so if we use here x=3 or -3 then it leads to fraction wich is not integer..we can use only multiple of 2.....

if we use -2  then also it leads to fraction.....so we are left with + -4 wich does not lead to fraction


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