Santa distributes 2 gifts to every child in the street at the Christmas evening. He mistakenly gives 4 gifts to some children. If he distributed 50 gifts to 21 children. How many children got 4 gifts?  Options.
A) 1  B) 2  C) 3  D) 4  E) 5
Santa had 50 gifts and there were 21 children, and each of them had to receive at least 2 gifts , so santa should have given 42 gifts in total, but instead he gave 4 gifts to some of them.   It means, he gave 8 more gifts in pairs of 2 i.e. he had 4 pairs of gifts. That means, 4 children got 4 gifts.   Verification:   17 children got only 2 gifts i.e. 17 * 2 = 34 gifts.   4 children got 4 gifts each, so : 4 * 4= 
<gadget id="calculator">4 * 4</gadget>
<output>16</output>
16 gifts   Total is 50.
<result>D</result>
Santa distributes 2 gifts to every child in the street at the Christmas evening. He mistakenly gives 4 gifts to some children. If he distributed 50 gifts to 21 children. How many children got 4 gifts?