Medium Math Class 9 Level 8

If the probability of an event is 11/20 then what is the probability of its not happening?

यदि किसी घटना की प्रायिकता 11/20 है तो उसके न होने की प्रायिकता क्या होगी?

A 7/20 / 7/20 B 8/20 / 8/20 C 9/20 / 9/20 D 11/20 / 11/20
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Correct Answer

C. 9/20 / 9/20

Explanation

The probability of the complementary event is 1 - 11/20 = 9/20.

पूरक घटना की प्रायिकता 1 - 11/20 = 9/20 होती है।

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