A box contains 20 electric bulbs

By Allen Kazadi Published November 9, 2022

A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective, is –

A. $\frac{4}{19}$

B. $\frac{7}{19}$

C. $\frac{12}{19}$

D. $\frac{21}{95}$

E. None of these

Answer: Option B

Allen Kazadi November 9, 2022 November 9, 2022

By Allen Kazadi

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