The is a meeting organized, every person shake hands with the other only once. if there are 60 shake hands, how many persons are there in the meeting?.
RE: The is a meeting organized, every person shake hands with the other only once. if there are 60 shake...
If the no of ppl are 'n' ttoal no of hand shakes are n-1 + n-2 + n-3 + ... + 3+ 2 + 1 so the total hand shakes = [n(n+1)]/2 here n = n-1 therefore total hansshakes [(n-1)(n-2)]/2=60 this equation doesn't get satisfied so the question is wrong !!!
The is a meeting organized, every person shake han...
The Question is wrongIf the no of peoplel are 'n'Total hand shakes = [n(n+1)]/2 here n = n-1 therefore total hansshakes [(n-1)(n-2)]/2=60 this equation doesn't get satisfied
RE: The is a meeting organized, every person shake hands with the other only once. if there are 60 shake hands, how many persons are there in the meeting?.
selecting 2 people at a time from n people can be done in nc2 ways i.e.,n(n-1)/2 ways => n(n-1)/2=60 => n is a rational value.......
