A coin is tossed if head turns up then pair of dice is thrown and sum of numbers is noted. If tail turns up then a card numbered from 1 to 9 is drawn and number is noted, then find the probability that number is `7 or 8`. (a) `13/36` (b) `15/72` (c) `19/72` (d) `11/36`

A die is thrown four times and the sum of the numbers is noted. If the sum of the numbers is 23 then the probability is

A dice is thrown once. Find the probability of getting a number : less than 8.

A coin is tossed n times. The probability that head will turn up an odd number of times , is

Two unbiased dice are thrown . Find the probability that the total numbers on the dice is 13

Two dice are thrown simultaneously and the sum of the numbers is noted. If the sum of the numbers is 7 , then the probability is

From 10 identical cards, numbered 1,2,3,…., 10 one card is drawn at random. Find the probability that the number on the card drawn is a multiple of: 2

From 10 identical cards, numbered 1,2,3,…., 10 one card is drawn at random. Find the probability that the number on the card drawn is a multiple of: 3

A unbiased coin is tossed. If the result is a head a pair of unbiased dice is rolled and the sum of the numbers obtained is noted. If the result is a tail, card from a well shuffled pack of eleven cards numbered 2, 3, 4, ………12 is picked and the number on the card is noted. What is the probability that the noted number is either 7 or 8?

A coin is tossed until a head appears or the tail appears 4 times in succession. Find the probability distribution of the number of tosses.

A coin is tossed, then a die is thrown. Find the probability of obtaining a 6 given that head came up.