Quantitative Aptitude Quest
Problems on Numbers
The sum of two consecutive odd numbers in a set of three consecutive odd numbers is 5 more than the third number. What is the 2nd of those numbers ?
1) 5 2) 7> 3) 9> 4) 11>
We know that:
3n = 2(n+2)+5
So?
3n = 2n + 4 + 5
3n = 2n + 9
Subtracting 2n from both sides:
n = 9
So the second odd number must be 11.
CHECKING:
3(9) = 2(11)+5
27 = 22+5
27 = 27 CHECK