Question
A bag contains 5 red balls, 4 green balls, and 3 yellow
balls. Two balls are drawn randomly. What is the probability that both are of the same color?Solution
Total balls = 5 + 4 + 3 = 12 The probability that both balls are of the same color = P(Same color) = (5C2 + 4C2 + 3C2) / 12C2 = (10 + 6 + 3) / 66 = 19/66 Correct Option: d)
60, 100, 160, 240, ?, 460
64, 32, ? , 48, 96, 240
What will come in place of the question mark (?) in the following series?
16, ?, 480, 1920, 5760, 115209 25 ? 121 221 337
...What will come in place of the question mark (?) in the following series?
17, 21, 30, 46, ?, 107
What will come in place of (?) Question mark in the given number series.
10, 15, 30, 75, 225, 787.5, ?
3, 5, 12, 38, 154, ?
4, 7, 12, 21, 36, ?
142, 148, 160, 178, ?, 232
5   3   4   7.5   17    ?    138