Question

What is the probability of obtaining 4 heads in a row when a coin is tossed?

(a) \(\frac {5}{8}\)

(b) \(\frac {6}{19}\)

(c) \(\frac {1}{16}\)

(d) \(\frac {4}{7}\)

I got this question during a job interview.

I'd like to ask this question from Probability topic in portion Probability of Mathematics – Class 12

Answer 1

The correct option is (c) \(\frac {1}{16}\)

Easiest explanation: Probability of getting 4 heads in a row = \(\frac {1}{2} \times \frac {1}{2} \times \frac {1}{2} \times \frac {1}{2} = \frac {1}{16}\)

hence, the probability of getting 4 heads in a row = \(\frac {1}{16}\)