If all the students in this room shook hands with each other, how many handshakes would there be altogether?
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|No. of Students||No. of Handshakes|
Can you find a formula for the number of handshakes given the number of students?
If instead of handshakes, each student in the room gave every other student a present, how many presents would be given?
Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a related student activity.