Two real numbers are randomly selected from the set `[0, 10].` Find the probability that their sum is less than `4`

Two number are randomly selected from the set of first 9natural numbers.If 'p' be the probability that their sum is odd given one of the selected digit is 2 and 'q' be the probability that 2 is one of the selected digit given their sum is odd then.

Three numbers are randomly selected from the set {10, 11, 12, ………, 100}. Probability that they form a Geometric progression with integral common ratio greater than 1 is :

Three numbers are randomly selected from the set {10, 11, 12, ………, 100}. Probability that they form a Geometric progression with integral common ratio greater than 1 is :

Three numbers are randomly selected from the set {10, 11, 12, ………, 100}. Probability that they form a Geometric progression with integral common ratio greater than 1 is :

Two numbers are selected from 1 to 20, then the probability that minimum out of these two is less than 11 is

If two different numbers are taken from the set {0, 1, 2, 3, …, 10}, then the probability that their sum as well as absolute difference are both multiples of 4, is