Permutation and Combination Questions Practice Question and Answer
2 5 Q:
5ea8f8583dbbdc761959abde 5 Q:
5d85cd34c1ed1701670be146
Q: Everybody in a room shakes hands with everybody else. The total number of hand-shakes is 55. The total number of persons in the room is:
1487 05ea8f8583dbbdc761959abde
5ea8f8583dbbdc761959abde- 111true
- 212false
- 38false
- 414false
- 5None of thesefalse
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Answer : 1. "11"
Q: In how many different ways can the letters of the word ‘STRESS’ be arranged?
1238 05d85cd34c1ed1701670be146
5d85cd34c1ed1701670be146- 1360false
- 2240false
- 3720false
- 4120true
- 5None of thesefalse
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Answer : 4. "120"
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