Question
7 children are to be selected from a group of 8 boys and
6 girls. In how many ways will the children with at most 3 girls and at least 4 boys be selected?Solution
Case I:  4 boys and 3 girls can be selected, Number of ways of selection = 8C4 × 6C3 = 70 × 20 = 1400 Case II: 5 boys and 2 girls can be selected, Number of ways of selection = 8C5 × 6C2 = 56 × 15 = 840 Case III: 6 boys and 1 girl can be selected, Number of ways of selection = 8C6 × 6C1 = 28 × 6 = 168 Case IV: 7 boys can be selected, Number of ways of selection = 8C7 = 8 So, total number of ways of selecting the children = 1400 + 840 + 168 + 8 = 2416 ways
Given below are four sentences, which are jumbled. Pick the option that gives the correct order.
P - Therefore, we are forced to approach you.
Each question is divided into four parts a,b,c,d. In some questions they are not in the sequence so according to grammar and context re- re-arrangement...
Which of the following best sums up the central idea of the paragraph formed after rearrangement?
Which would be the second sentence after rearrangement?
What sentence should come second in the paragraph?
1. In her notes,
P. to hamper the
Q. how the lack of
R. the mediator wrote
S. communication seemed
6. creation of a settlement.
1. With such a passive attitude, the very
P. to one that is inferior you will begin to
Q. moment you pass from a superior environment
...The question consists of five statements labelled A, B, C, D and E which when logically ordered form a coherent passage. Choose the option that represe...
Which of the following is the fifth sentence in the passage?
Which of the following is the fourth sentence of the passage?
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