Dear Readers,
We have started the 56 days Study Plan for IBPS PO Prelims. This study plan is to efficiently utilise time and hard work to channelise it towards smart work. From now quizzes on Bankersadda will be according to the given study plan and this will help you prepare important topics in limited time.
Today is DAY 19 of the study plan and in Quantitative Aptitude today’s chapter is Permutation and Combination.
Q1. A boy has 3 library cards and 8 books of his interest in the library. Of these 8, he does not want to borrow chemistry part II unless Chemistry part I is also borrowed. In how many ways can he choose the three books to be borrowed?
(a) 56
(b) 27
(c) 26
(d) 41
(e) None of these
Q2. In how many ways can 7 persons be seated at a round table if 2 particular persons must not sit next to each other?
(a) 5040
(b) 240
(c) 480
(d) 720
(e) None of these
Q3. In how many different ways can the letters of the word ‘MATHEMATICS’ be arranged so that the vowels always come together?
(a) 10080
(b) 4989600
(c) 120960
(d) 12960
(e) None of these
Q4. There are 4 candidates for the post of a lecturer in Mathematics and one is to be selected by votes of 5 men. The number of ways in which the votes can be given is
(a) 24
(b) 36
(c) 40
(d) 48
(e) None of these
Q5. The number of ways in which 6 men and 5 women can dine at a round table if no two women are to sit together is given by
(a) 6 ! × 5 !
(b) 5 ! × 4 !
(c) 30
(d) 7 ! × 5 !
(e) None of these
Q6. A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is
(a) 140
(b) 280
(c) 196
(d) 346
(e) None of these
Q7. There are 100 students in a college class of which 36 are boys studying statistics and 13 girls not studying statistics. If there are 55 girls in all, then the probability that a boy picked up at random is not studying statistics, is
(a) 3/5
(b) 2/5
(c) 1/5
(d) 4/5
(e) None of these
Q8. The number of ways in which a team of eleven players can be selected from 22 players including 2 of them and excluding 4 of them is:
(a) 16C11
(b) 16C5
(c) 16C9
(d) 20C9
(e) None of these
Q9. In how many different ways can the letters of the word ‘PRETTY’ be arranged?
(a) 120
(b) 36
(c) 360
(d) 720
(e) None of these
Q10. A box contains 3 Green balls, 4 Red balls, 2 Blue balls and 2 Orange balls. If two balls are drawn at random, what is the probability that both are red?
(a) 3/7
(b) 1/2
(c) 2/11
(d) 1/6
(e) None of these
Q11. In how many different ways can 4 boys and 3 girls be arranged in a row such that all boys stand together and all the girls stand together?
(a) 75
(b) 576
(c) 288
(d) 24
(e) None of these
Directions (12-13): Answer these questions on the basis of the information given below:
From a group of 6 men and 4 women a Committee of 4 persons is to be formed.
Q12. In how many different ways can it be done so that the committee has at least one woman?
(a) 210
(b) 225
(c) 195
(d) 185
(e) None of these
Q13. In how many different ways can it be done, so that the committee has at least 2 men?
(a) 210
(b) 225
(c) 195
(d) 185
(e) None of these
Q14. In how many different ways can the letters of the word ‘ARMOUR’ be arranged?
(a) 720
(b) 300
(c) 640
(d) 350
(e) None of these
Q15. In how many ways can 5 persons be chosen from 6 boys and 4 girls so as to include exactly one girl?
(a) 252
(b) 210
(c) 126
(d) 90
(e) 60
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