Probability Refresher

A card is drawn at random from a deck of cards. Find the probability of getting a queen.

• 1/52

• 5/52

• 1/13

• 1/26

A card is drawn at random from a deck of cards. Find the probability of getting the 3 of diamond?

• 1/52

• 4/52

• 1/13

• 1/26

Suppose a bird lays two eggs. What is the probability that first egg hatched is a female bird and the second egg hatched is male bird?

• 1/2

• 1/3

• 1/4

• 3/4

A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?

• 1/2

• 1/10

• 1/3

• 1/5

A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is neither red nor white ?

• 1/3

• 7/20

• 1/7

• 1/2

A bag contains 4 white counters, 6 black counters, and 1 green counter. What is the probability of drawing a black counter?

• 1/3

• 1/4

• 1/6

• 6/11

A bag contains 4 white counters, 6 black counters, and 1 green counter. What is the probability of drawing a white counter or a black counter ?

• 10/11

• 1/11

• 2/3

• 1/3

The blood groups of 200 people is distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?

• 0.35

• 0.40

• 0.5

• 0.2

Ritu has 3 shirts in shades of red, 4 in yellow shades and 5 in green shades. Three shirts are picked at random. The probability that all of those are in red shades is :

• 1/220

• 1/64

• 1/33

• None

How many 6-digit odd numbers with distinct digits can be created using the digits 1, 2, 3, 4, 5, 6 and what is the probability of selecting such a number?

• 360, ½

• 720, 1/5

• 120, 1/6

• 360, 1/4