At a party each child gives a gift to the rest.There were 132 gifts altogether. Find the number of Children.

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Solution

Let there are n children, then each child will have n-1 gifts.
Total number of gift=total number of children*number of gifts per child
n(n-1)=132
solve for n
n can not be -ve
n=12

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At a party each child gives a gift to the rest.There were 132 gifts altogether. Find the number of Children.

Let there are n children, then each child will have n-1 gifts. Total number of gift=total number of children*number of gifts per child n(n-1)=132 solve for n n can not be -ve n=12

Let there are n children, then each child will have n-1 gifts.
Total number of gift=total number of children*number of gifts per child
n(n-1)=132
solve for n
n can not be -ve
n=12