Yesterday We got to be challenged figuring out how to solve the problem and we tried lots of different ways to get the answer.The question was "There were 20 people in the room.If everyone had to shake hands,How many handshakes will occur?" The answer was '190 handshakes..We tried different methods.We tried multiplication at first 20 x 19 = 380 but it didn't work and it wasn't the answer .So I tried to List the numbers 19 to 1 and then added them. and then I got the answer.
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