Question
In how ways can the selection be made so that a
particular member is always excluded?   There are 5 members in a delegation which is to be sent abroad. The total no. of members is 11.ÂSolution
As 1 person is always excluded, members are to be chosen out of 10 persons. ∴ Reqd. no. of ways = 10C_5 =  (10 ×  9 × 8 × 7 × 6)/(5 × 4 × 3 × 2) =  252
More Permutation and combination Questions
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
√323.89  × (3.20) ÷ 9.02 =?
24.11% of 249.99 + √143.97 ÷ 12.02 = ?
 5983.987 + 59832.999 – 598.873 = ?
(100.01% of 44.89) ÷ 14.98 = √? - √48.98
(5.013 – 30.04) = ? + 11.98% of 4799.98
(4096)1/3 × 10.11 × 11.97 ÷ 24.32 = ? + 15.022
- √81.45 + √225.60 + 49.89% of (520.43 + 22.13% of 131.45) = ?
40.024 of 54.89% of 19.9 = ? × √(2661.98/22.09)Â
Find the approximate value of Question mark(?) for given equation.Â
135.86% of 249.99 + 24.95 × 14.03 ÷ 2.01 = ?
