UPSC CAPF AC 2024 Paper 1 · Question 65

Question 65 of the UPSC CAPF (AC) 2024 Paper I (4 August 2024). Try it first, then open the answer and explanation.

1. CAPF 2024 · P-I · Q65 · General Mental Ability · Arithmetic

   A fair coin is tossed three times and the outcomes are noted. What is the probability of getting exactly two heads?

   1. 2/3
   2. 1/2
   3. 5/8
   4. 3/8

   एक अनभिनत सिक्के को तीन बार उछाला जाता है और उसके परिणाम नोट किए जाते हैं। ठीक दो चित (हेड) प्राप्त होने की प्रायिकता क्या है?

   1. 2/3
   2. 1/2
   3. 5/8
   4. 3/8
   Show answer

   Answer: (4) 3/8

   उत्तर: (4) 3/8

   Three tosses give 2³ = 8 equally likely outcomes, and exactly two heads occur in 3 of them (HHT, HTH, THH). So the probability is 3/8.

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