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

The smallest value of natural number n, for which 2n + 1 is not a prime number, is 3 (b) 4 (c) 5 (d) None of these

The number of values of n in N for which ""^(n+2)C_2: ""^(n+3)C_1 =4 : 2 is

What is the first value of n for which n^(2)+n+41 is not a prime? 1 (b) 10(c)20 (d)

Number of integral values of n for which the quantity (n+i)^(4) is an integer

The total number of m values for n = 4 is

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

Consider the numbers 4^n , where n is a natural number. Cheek whether there is any value of n for which 4^n ends with the digit zero.

Consider the numbers 4^(n) , where n is a natural number. Check whether there is any value of n for which 4^(n) ends with the digit zero.