If the square of sum of three positive consecutive natural number exceeds the sum of their squares by 292, then what is the largest of the three number?
A. 5
B. 6
C. 7
D. 8
Answer: Option D
Solution(By Examveda Team)
Go through option[(x + 2) + (x + 1) + x]2 = [(x + 2)2 + (x + 1)2 + x2] + 292
Let x = 3
(5 + 4 + 3)2 = 25 + 16 + 9 + 292
144 < 342
Option D, x = 6
(8 + 7 + 6)2 = 64 + 49 + 36 + 292
441 = 441
∴ Option D satisfy this equation
So, largest is 8.
This Question Belongs to Arithmetic Ability >> Number System
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Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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