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A teacher of 6 students takes 2 of his students at...

This question belongs to Arithmetic Ability Permutation And Combination
Permutation and Combination
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A teacher of 6 students takes 2 of his students at a time to a zoo as often as he can, without taking the same pair of children together more than once. How many times does the teacher go to the zoo?

Answer & Solution
Correct Answer: Option C
Two students can be selected from 6 in 6C2 =15 ways.
Therefore, the teacher goes to the zoo 15 times.
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1 Comment
Nimisha Sharma
Nimisha Sharma 9 years ago
Tere should be subtraction of 1 as no same 2 child are going together
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