Kalpesh Sharma

==>> From height of 8 mts a ball fell down and each time it bounces half the distnace back. What will be the distance traveled?

Ans.: 24

Sol. 8+4+4+2+2+1+1+0.5+0.5+ and etc .. =24

==>> First day of 1999 is Sunday what day is the last day?

Ans.: Monday

==>> Increase area of a square by 69% by what percent should the side be increased.

Ans.: 13

Sol:Area of square=x2
Then area of increase=100+69=169
square root of 169 i.e 13 .

==>> Ten years ago, chandrawathi’s mother was four times older than her daughter. After 10years, the mother will be twice older than daughter. The present age of Chandrawathi is?

Ans.20 years

Sol: Let Chandrawathi’s age 10 years ago be x years.
Her mother’s age 10 years ago = 4x
(4x+10)+10=2(x+10+10)
x=10
Present age of Chandrawathi = (x+10) = 20years

==>> Finding the wrong term in the given series
7, 28, 63, 124, 215, 342, 511

Ans:28

Sol: Clearly, the correct sequence is
2^3 – 1, 3^3 – 1, 4^3 – 1, 5^3 – 1, ……….
Therefore, 28 is wrong and should be replaced by (3^3 – 1) i.e, 26.