Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total number of pictures.
Remove all the consonants
Tic Tac Toe FTW
Tell me the slope
03 - Matrix Variables 4
Area of an Isoceles Triangle
Given a square and a circle, please decide whether the square covers more area.
How many jokers?
Size of this cup?
wait for me
Multiply to the limit?
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