Permutations and Combinations - Data Intensity 1 Multiple Questions and Answers.




16.Using all the letters of the word “THURSDAY”, how many different words can be formed?
A. 8
B. 8!
C. 7!
D. 7

17.How many three letter words are formed using the letters of the word TIME?
A. 12
B. 20
C. 16
D. 24

18.A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt?
A. 21
B. 12
C. 9
D. 108

19.There are 30 people in a group. If all shake hands with one another , how many handshakes are possible?
A. 870
B. 435
C. 30!
D. 29! + 1

20.In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together?
A. 120
B. 720
C. 4320
D. 2160

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