The number of positive integers 'n' for which 3n-4, 4n -5 and 5n - 3 are all primes is

The least positive integer n for which ((i-1)/(i+1))^n is a real number is (A) 2 (B) 3 (C) 4 (D) 5

Number of values of n in N for which n^4 + 4 is prime is

For how many positive integers ‘n’, n^3-8n^2+20n-13 is a prime?

Use Euclid's division lemma to show that the square of any positive integer is of the form 5n or 5n+1 or 5n+4, where n is a whole number.

Possible positive integer n for which the expression n^(3)14n^(2)+64n-93 is prime,is/are

Number of values of n in N for which n^(4)+4 is prime is

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

The number of positive integers which satisfy sin((pi)/(4n))+cos((pi)/(4n))=sqrt((n)/(2)) is -