Question

If there are 30 men in a room and each men has to have a handshake with each other, how many hand shakes took place together?

Answer 1

Answer:

900 hand shakes

Step-by-step explanation:

multiply by number

Answer 2

Answer:

870

Step-by-step explanation:

there are 30 men in the room

and they have to hand shake with each orther

so there will be

30( total number of men ) × 29 (30-1)

= 870

therefore there will be 870 hand shakes