JEE Mains 11-Apr-2023 Shift 2 Solved Paper

Let the probability of getting head for a biased coin be ‌

1

4

. It is tossed repeatedly until a head appears. Let N be the number of tosses required. If the probability that the equation 64x2+5Nx+1=0 has no real root is ‌

p

q

, where p and q are co-prime, then q−p is equal to _______.