Question

In a pack of 52 playing cards one card is lost. From the remaining cards, a card is drawn at random. Find the probability that the drawn card is queen of heart, if the lost card is a black card.

BINGO is game of chance. The host has 75 balls numbered 1 through 75. Each player has a BINGO card with some numbers written on it. The participant cancels the number on the card when number written on the ball selected at random. Whosoever cancels all the numbers on his/her card, says BINGO and wins the game. The table given below, shows the data of one such game where 48 balls were used before Tara said 'BINGO'.

Two coins are tossed simultaneously. The probability of getting atleast one head is

The number of red balls in a bag is three more than the number of black balls. If the probability of drawing a red ball at random from the given bag is 12/23, find the total number of balls in the given bag.