Question

Two standard unbiased dice are thrown. The probability that both of them show a composite number greater than 2 is?
1. 3/8
2. 1/5
3. 2/9
4. 1/7
5. 1/9

Answer 1

Correct Answer - Option 5 : 1/9

GIVEN:

Dice thrown = 2

Outcomes should be composite and greater than two.

FORMULA USED:
P = Favorable outcomes/Total outcomes

CALCULATION:

Total outcomes for 2 dice are 36.

Favorable outcomes = (4, 4) (6, 4) (4, 6) (6, 6)

P = 4/36 = 1/9

∴ The probability 1/9.