A function is defined from A to B, where number of elements in A and B are 2 and 6 respectively. If the total number of functions is x and total number of one one functions is y, then the value of x+y is
A
66
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B
66.0
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C
66.00
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Solution
We have n(A)=2 and n(B)=6;
So, total number of functions =62=36
Total number of one one functions =6×5=30
So, clearly the values of x and y are 36 and 30 respectively.
Thus x+y=66