Question

Teena is practising for an upcoming Rifle Shooting tournament. The probability of her shooting the target in the 1^st, 2^nd, 3^rd and 4^th shots are 0.4, 0.3, 0.2 and 0.1 respectively. Find the probability of at least one shot of Teena hitting the target.

Answer 1

Required probability

= 1 – Probability that neither of the target hits

= 1 – [(1 – 0.4)(1 – 0.3)(1 – 0.2)(1 – 0.1)]

= 1 – [0.6 × 0.7 × 0.8 × 0.9]

= 1 – 0.3024

= 0.6976