Q. 275.0( 1 Vote )

If the probabilit

Let E1 be the event that A fails in an examination

and E2 be the event that B fails in an examination

Then, we have

P (E1) = 0.2 and P (E2) = 0.3

Now, we have to find the P (either E1 or E2 fails)

P(either E1 or E2 fails) = P(E1) + P(E2) – P(E1 E2)

≤ P(E1) + P(E2)

≤ 0.2 + 0.3

≤ 0.5

Hence, the correct option is (C)

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