Probability Practice Test 1

Question : 9 of 40

Marks: +1, -0

A coin and a dice are thrown. If (A) denotesan event Head and odd face and (B) denotesan event Tail and even face, then P(A) + P(B)is:

$1/6$
$1/4$
$3/4$
$1/2$
None of these

Validate

Solution:

S = {(H, 1), (H, 2), (H, 3), (H, 4), (H, 5), (H, 6), (T, 1), (T, 2), (T, 3) (T, 4), (T, 4), (T, 5), (T, 6)}
A = (H, 1), (H, 3), (H, 5)
B = (T, 2), (T, 4), (T, 6)
P(A)

=3/12=1/4

P(B)

= 1/4

P(A) + P(B)

=1/4+1/4=2/4=1/2

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