Hexaware
Company
Numerical Ability
Probability
A group of 630 children is arranged in rows for a group
photograph session. Each row contains three fewer
children than the row in front of it. What number of rows
is not possible
Read Solution (Total 2)
-
- 6
Let no of children be x, x+3,x+6,x+9,x+12,x+15...........
Present in Rows R
1
,R
2
,R
3
,R
4
,R
5
,R
6
,.......... respectively
Putting R=3,4,5 and 6
We see that when R=6
x+x+3+x+6+x+9+x+12+x+15=630
6x+45=630
6x=585
x=97.5
then x is not an integer.
So, R=6 does not satisfies. - 3 years agoHelpfull: Yes(0) No(2)
- How to know the number of rows exactly...
- 1 year agoHelpfull: Yes(0) No(0)
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