PROBABILITY

If a fair coin is tossed four times, what is the probability of obtaining at least one head?

• 0.5

• 0.25

• 0.8125

• 0.9375

Four fair coins are tossed once. Calculate the probability of obtaining equal number of heads and tails.

• 0.2500
• 0.3750
• 0.5000
• 0.9375

Find the probability that in five tosses of an unbiased die, a six will be obtained twice.

• 0.161
• 0.033
• 0.028
• 0.016

Find the total number of possible outcomes in a throw of three dice.

• 3
• 216
• 36
• 64

A soldier hits a target three out of five times. If he has four shots, what is the probability that he will miss all?

• 0.0256

• 0.0512

• 1

• 0.4

A bag contains 5 red balls and 3 black balls. Two balls are drawn in succession without replacement. What is the probability of drawing one of each colour?

• 0.5357
• 0.4688
• 0.2679
• 0.2344

A fair die is tossed twice. What is the sample size?

• 6
• 12
• 36
• 48

A fair die is tossed twice. Find the probability of obtaining a 3 and a 5?

• 0.4167
• 0.0556
• 0.2222
• 0.0278

A box contains 4 red and 3 blue identical balls. If two balls are picked at random, one after the other without replacement, find the probability that one is red and the other is blue.

• 0.5714
• 0.2857
• 0.1429
• 0.0833

The probability that Kofi and Ama hit a target in a shooting competition are 1/6 and 1/9 respectively. What is the probability that only one of them will hit the target?

• 0.0185
• 0.2407
• 0.7407
• 0.7593