Latest Book Aptitude Question SOLUTION: In a birthday party, every person shakes hand with every other person. If there was a total of 28 handshakes in the party, how many persons were present in the party?

• Placement Papers
• /
• Book

Book Question Papers:

(#M40021297) BOOK question Keep an EYE

In a birthday party, every person shakes hand with every other person. If there was a total of 28 handshakes in the party, how many persons were present in the party?

Asked In Book Abhishek (11 years ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (5)   (3) Submit Your Solution

Read Solution (1) :

tauqueer ahmad ansari  (11 years ago)

suppose de no of person be 10
den 1st persn will have a 9 hndshake
2nd persn will have a 8 hndshake
similarly...........7,6,5,4,3,2,1,0
9+0=0
8+1=9
7+2=9
6+3=9
5+4=9

total hndshake =5*9=45
=tolal no/2*(total no -1)
ie ans ll be=x/2(x-1)=28
solving dese ans will be 8

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.