Question

A bag contains 4 white, 5 red and 6 black balls. If two balls

are drawn at random, then the probability that one of them is

white is -

• A. $\frac { 44 } { 105 }$
• B. $\frac { 11 } { 105 }$
• C. $\frac { 11 } { 21 }$
• D. None of these

Answer 1

Answer: (A)

$\frac { 44 } { 105 }$

Answer 2

Required prob. = $\frac { 4 \times 11 } { 15 \times 14 }$ × 2 = $\frac { 44 } { 105 }$