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Permutation and combination aptitude questions and answers - Page 1

1. In how many ways can six different rings be worn on four fingers of one hand ?

A. 10

B. 12

C. 15

D. 16

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2. In how many ways can the letters of the word ‘LEADER’ be arranged ?

A. 72

B. 144

C. 360

D. 720

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3. In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?

A. 266

B. 5040

C. 11760

D. 86400

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4. Kate, Demi, Madona, Sharon, Britney and Nicole decided to lunch together in a restaurant. The waiter led them to a round table with six chairs. How many different ways can they seat?

A. 60

B. 120

C. 240

D. 480

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5. In how many ways can 21 books on English and 19 books on Hindi be placed in a row on a shelf so that two books on Hindi may not be together ?

A. 3990

B. 1540

C. 1995

D. 3672

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