The smallest positive integer 'n' for which `((1+i)/(1-i))^(n)=1` is

Find the least positive integer n such that ((1+i)/(1-i))^(n)=1 .

Find the least positive integer n such that ((1 + i)/(1 - i))^(n) = 1 .

The least positive integer n such that ((2i)/(1 + i))^(n) is a positive integer is

The smallest natural number 'n' for which n!lt((n+1)/2)^(n) holds is

The greatest positive integer which divides (n+1)(n+2)(n+3)...(n+r) for all ninN is

The greatest positive integer which divides n(n+1)(n+2)(n+3) for all ninN is

If n >1 , the value of the positive integer m for which n^m+1 divides a=1+n+n^2+ddot+n^(63) is/are 8 b. 16 c. 32 d. 64