HELPPP FIRST ANSWER THAT IS ACCURATE WITH EXPLANATION GETS BRAINLIST 5 STARS AND THANKS ( DONT PLAGIARIZE )
2 answers:
Answer:
20 x 19 = 380 hands touched
380/2 = 190 handshakes
Step-by-step explanation:
Answer: 190 handshakes
Step-by-step explanation:
The first will shake 19 hands, the second 18 hands and so on......the 19 th will shake one hand
so 19+18+17+.....+1=19*20/2=19*10=190 handshakes
It is ok now?
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