HR Interview
Interview
Numerical Ability
what are the ages of the three brothers?
1) the product of their ages is 21
2) the sum of their ages is not divisible by 3.
Read Solution (Total 8)
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- Let x,y,z their ages
Xyz=21
7*3*1=21
- 9 years agoHelpfull: Yes(0) No(0)
- how to find 7,3,1?
- 9 years agoHelpfull: Yes(0) No(0)
- There ages are 7,3,1, it satisfies both condition
1) product 7*3*1=21
2) sum 7+3+1 =11 not divisible by 3 - 9 years agoHelpfull: Yes(0) No(0)
- 7*3*1=21;
7+3+1=11,not divisible by 3 - 9 years agoHelpfull: Yes(0) No(0)
- xy=21
let us tk:
x+y=4(not divisible by 3)
putting value
x(4-x)=21
x=7 and y=3
- 9 years agoHelpfull: Yes(0) No(0)
- 1, 3 and 7
As their product is 21
and their sum is not divisible by 3 - 8 years agoHelpfull: Yes(0) No(0)
- it can't be answer as there may be case that two brothers are twins and their age is 1 and third child have age of 21.
so (1*1*21=21)
(1+1+21=23) not divisible by 3 - 7 years agoHelpfull: Yes(0) No(0)
- answer is 1,3,7
- 7 years agoHelpfull: Yes(0) No(0)
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