Allied & ICAR Exam Bank • ALLIED_1876 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

Three unbiased coins are tossed together. The probability of getting at most 2 heads is:

Options:

  • (A) 7/8
  • (B) 3/4
  • (C) 5/8
  • (D) 1/2

Answer Key:

A

Step-by-Step Solution & Explanation

Complement is getting 3 heads, which has probability $1/8$. $P(\le 2 \text{ heads}) = 1 - 1/8 = 7/8$.
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