Probability Mathematics - Probability

Namita tossed a coin once. What is the probability of getting tail?

Namita tossed a coin once. What is the probability of getting Head?

A coin is tossed 100 times with the following frequency:
Head = 55, Tail = 45
find the probability of getting tail.

A coin is tossed 100 times with the following frequency:
Head = 55, Tail = 45.
Find the probability of getting head.

1000 tickets of a lottery were sold and there are 5 prizes on these tickets. If Namita has purchased one lottery ticket, what is the probability of winning a prize?

A coin is tossed once. What is the probability of getting a tail?

From a pack of 52 playing cards, all cards whose numbers are multiples of 3 are removed. A card is now drawn at random. What is the probability that the card drawn is An even-numbered red card?

From a pack of 52 playing cards, all cards whose numbers are multiples of 3 are removed. A card is now drawn at random. What is the probability that the card drawn is A face card (King, Jack or Queen).

A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability that at the card drawn is neither a red card nor a queen.

1800 families with 2 children were selected randomly and the following data were recorded:

No. of girls in a family	2	1	0
No. of families	700	850	250

Computer the probability of a family chosen at random having: 1 girl.

Find the probability that leap year selected at random, will contain 53 Sundays.

Two dice are thrown simultaneously. Find the probability of getting: a multiple of 3 as the sum.

Two dice are thrown simultaneously. Find the probability of getting: a doublet of even number.

Two dice are rolled together. Find the probability of getting: a total of at least 10

Two dice are thrown simultaneously. Find the probability of getting: the sum as a prime number

A box contains some black balls and 30 white balls. If the probability of drawing a black ball is two-fifths of a white ball, find the number of black balls in the box.