Quizzes & Puzzles14 mins ago
question!!
3 Answers
It was the 1st day at school, the teacher suggested that it would be a good idea for each child to meet every other child in the class. The teacher said, "when you meet, please shake hands and introduce yourself by name"
If there were 9 children in the class, how many total handshakes were there?
Thank You
If there were 9 children in the class, how many total handshakes were there?
Thank You
Answers
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The class has 9 children. The first child shakes hands with the other 8 children. The second child has already shaken hands with the first child, and so has to shake hands with only the other 7 children and so on. The second-last child has to shake hands with only one child, and the last child has already met all the children. so the number of handshakes is
8+7+6+5+4+3+2+1 = 36
The class has 9 children. The first child shakes hands with the other 8 children. The second child has already shaken hands with the first child, and so has to shake hands with only the other 7 children and so on. The second-last child has to shake hands with only one child, and the last child has already met all the children. so the number of handshakes is
8+7+6+5+4+3+2+1 = 36
1 to 3 of 3
