Three unbiased coins are tossed simultaneously

MATHEMATICS · Single correct · A Level · Mathematics · Probability · Probability

Problem

Three unbiased coins are tossed simultaneously. What is the probability of getting at least one tail? (a)

\dfrac{5}{8}

(b)

\dfrac{7}{8}

(c)

\dfrac{3}{8}

(d)

\dfrac{3}{4}