Question
From a group of 8 engineers and 4 doctors, a committee of 6
members is to be formed. Find the number of ways to form the committee such that at least 5 engineers are selected.Solution
Case I: 5 engineers and 1 doctor:
8 C 5 × 4 C 1 = 56 × 4 = 224
Case II: 6 engineers and 0 doctors:
8 C 6 × 4 C 0 = 28 × 1 = 28
Total = 224 + 28 = 252 ways
How many boxes are there in between Black and Pink, if the box just kept below blue is yellow?
Four of the following five are alike in a certain way and hence they form a group. Which one of the following does not belong to that group?
...Statements:
A < B ≥ C > U = W; R < Q > L ≤ W = Y; Q > P
Conclusions:
I. B < P
II. C > R
On which floor does the person live who likes Shreya ghoshal?
Who likes Red?
Who among the following live immediate below N?
Which of the following statement is true?
Who among the following lives to the south east of W?
I. B
II. X
III. V
Who lives on 6th floor?
Who lives in fourth floor and the age of that person is?
