Probability Easy

Out of a deck of 52 playing cards, what is the probability of picking a red queen?

If 10 people out of a class of 42 got more than 80 marks out of 100 and 27 got between 50 and 80 marks, what is the probability of picking a student who got more than 50 marks?

Jay and his friends go to the annual fair that takes place in their town every year. They enter a contest where if they pick a red ball out of a bag, they win 100 rupees and if they manage to pick a yellow ball after that, they win 200 rupees. If there are 5 red balls, 3 blue balls, 6 yellow balls and 4 green balls in the bag, what is the probability that a red ball is picked? What is the probability that a yellow ball is picked afterward?

Sunita and Sangeetha play a squash match and the probability that Sunita will win is 0.58. The probability that the match will be a draw is 0.08. What is the probability that Sangeetha will not win?

If two coins are tossed simultaneously, what is the probability of getting one head and one tail ?

Find the smallest number that, when divided by 12, 15, and 20, leaves a remainder of 5 in each case.

A number consists of two digits. The sum of its digits is 9. When 9 is subtracted from the number, the digits reverse. Find the number.