Question

IF THERE ARE 30 PEOPLE IN YOUR CLASS ALL HAVE TO DO HAND SHAKES WITH EACH FIND TOTAL NO.OF HAND SHAKES​

Answer 1

Answer:

435 handshakes

Step-by-step explanation:

Considering 30 people in a class.

1st person would handshake with 29 people

Similarly second with 28

Third with 27 etc.

So like this,

To count total number of handshakes, all you have to do is:

29+28+27...........+4+3+2+1

OR

870[29 *30](total number of hands)/2(as two hands would handshake)

Thus the answer you would get is 435....

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Answer 2

Answer:

30×2=60

Step-by-step explanation:

1 30 people in one class

2 all have to do hand shake with each other

3 everyone have two hands

4 son answer will be 30×2=60