Permutation & Combination Model Questions Set 1 Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 1 EXERCISES
The following question based on Permutations & Combination topic of quantitative aptitude
(a) 26
(b) 27
(c) 41
(d) 56
e) None of these
The correct answers to the above question in:
Answer: (c)
Two possibilities are there :
(i) Chemistry part I is available in 8 books with Chemistry part II.
or
(ii) Chemistry part II is not available in 8 books but Chemistry part I is available.
Total No. of ways = 1× 1 ×$^6C_1 + ^7C_3$ = 6 + ${7 × 6 × 5}/{3 × 2}$ = 6 + 35 = 41
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Read more model questions set 1 Based Quantitative Aptitude Questions and Answers
Question : 1
In how many different ways can be letters of the word 'CYCLE' be arranged?
a) 30
b) 4240
c) 80
d) 120
e) None of these
Answer »Answer: (e)
CYCLE whereas C comes two times.
So, arrangements are = ${5!}/{2!}$ = ${5 × 4 × 3 × 2}/{2}$ = 60 ways
Question : 2
How many different ways can the letters in the word ATTEND be arranged?
a) 240
b) 120
c) 80
d) 60
e) None of these
Answer »Answer: (e)
There are 6 letter in the word 'ATTEND' whereas, T comes two times.
So, required number of ways = ${6!}/{2!}$ = ${720}/{2}$ = 360
Question : 3
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) 5! × 4!
b) 30
c) 7! × 5!
d) 6! × 5!
e) None of these
Answer »Answer: (d)
No. of ways in which 6 men and 5 women can dine at a round table = 6! × 5!
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