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Question
Mathematics
A father with 8 childrens takes them 3 at a time to the zoological gardens, as often as he can without taking the same 3 childrens together more than once. The number of times he will go the garden is
Q. A father with 8 childrens takes them 3 at a time to the zoological gardens, as often as he can without taking the same 3 childrens together more than once. The number of times he will go the garden is
796
79
Permutations and Combinations
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A
56
68%
B
100
15%
C
112
9%
D
None of these
9%
Solution:
Number of times he will go to garden
=
Number of ways of selecting 3 children from 8 children
=
8
C
3
=
3
×
2
8
×
7
×
6
=
56