Discussion

If three coins are tossed simultaneously, than the probability of getting at least two heads, is

Answer: C

Three coins give \( 2^{3} = 8 \) equally likely outcomes.

Those with at least two heads are

\[ \text{HHT},\ \text{HTH},\ \text{THH},\ \text{HHH} \]

\[ P = \frac{4}{8} = \frac{1}{2} \]

"At least two" includes all three, so the HHH case must not be left out; counting only exactly two would give \( \tfrac{3}{8} \).

No comment is present. Be the first to comment.

Loading…