engineering mathematics MCQ #4023

A coin is tossed 3 times. Find the probability of getting at least 2 heads.

engineering mathematics MCQ #4023

  1. Question 1

    Q1. A coin is tossed 3 times. Find the probability of getting at least 2 heads.

    • A) (3C2 + 3C3) / 2³
    • B) 3C2 / 2³
    • C) (3C2 + 3C3) / 3!
    • D) 1 / 2

    Answer: (3C2 + 3C3) / 2³

    Explanation: P(at least 2 heads) = P(2 heads) + P(3 heads) = (3C2 + 3C3) / total outcomes.