If 4 squares are chosen at random on a chess board, the probability that they lie on a diagonal line is

(i)If fuor squares are chosen at random on a chess board, find the proability that they lie on diagonal line. (ii) If two squares are chosen at random on a chess board, what is the Probability that they have exactly on corner in common? (ii) If nine squares are chosen at random on a chess board, what is the probability that they form a square of size 3x3?

If two of the 64 squares are chosen at random on a chess board, the probability that they have a side in common is

Two smallest squares are chose at random on a chess board and p/q is the probability that they have exactly one corner in common ( p and q are co-prime) then q-20p=

Two squares of 1xx1 are chosen at random on a chestboard. What is the probability that they have a side in common ?

On a chess board if two squares are chosen at random, what is the probability that they haven't a side in common?

If three square are selected at random from chess board. then the probability that they form the letter 'L' is (a) 196/(64C_3) (b) 49/(64C_3) (c) 36/(64C_3) (d) 98/(64C_3)

Three numbers are chosen at random from 1 to 20 .The probability that they are consecutive is

In a batch of 10 light bulbs , 2 are defective . If 3 of the bulbs are chosen at random, what is the probability that at least 1 of the chosen bulbs is defective ?

A bag contains 4 tickets numbered 00, 01, 10 and 11. Four tickets are chosen at random with replacement, the probability that the sum of numbers on the tickets is 22 is