Two numbers are chosen from {1, 2, 3, 4, 5, 6, 7, 8} one after another without replacement. Then the probability that

Two numbers are chosen from [1,2,3,4,5,6] one after another without replacement . Find the probability that one of the smaller value of two is less than 4 :

If p and q are chosen randomly from the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} with replacement. Find the probability that the roots of the equation x^(2) + px + q = 0 are real.

If P and Q are chosen-randomly from the set { 1, 2, 3, 4, 5, 6. 7, 8,9,10}, with replacement, determine the probability that the roots of the equation x^2 + px + q = 0 are real.

From the set of numbers {1,2,3,4,5,6,7,8} two numbers are selected at random without replacement.The probability that their sum is more than 13 is