Explanation

1+2+3+4+5+6+7+8+9+10 = 55 multiply by 7 = 55x7 = 385 as 10 units so divide by 10 to find averages value= 385/10=38.5.

Explanation

5%of(25%of1600)=5%of( 100 25 ∗1600)

=5% of 400=20

Explanation

15% of 201 = 30.15 13937.869/199.54= 69.85 finally 30.15+69.85 which is equal to 100.

Explanation

Let the side of the square = 100 m So area of square = 100 x 100 = 10000. New length = 140 m, New breadth = 130 m previous area= 100x100m2 new area= 140x130m2 so we can find: Increase in area = [(140 x 130) - (100 x 100)] m2 = 8200 m2 ∴ Required increase percent = (8200/ 10000) x 100 % = 82%.

Explanation

Pranab Mukherjee was the 13th President of India serving from 2012 through 2017.

Pranab Mukherjee died in August 2020.

Explanation

Correct option is B % of Sulphur =5/ 2250×100= 2/9%      

Explanation

Explanation

Mohandas Karamchand Gandhi belonged to India. 

Explanation

Speed=45×518m/sec=252m/sec Total distance to be covered= 360+140)m=500mFormulaforfindingTime=Distance Speed∴Required time=(500×225)sec=40sec.

Explanation

LOCKER (6 letters) 6×3 =18 -1 = 17

TRAGEDY (seven letters) 7×3 =21 - 1 = 20.

PREPLANING (Ten Letters) 10 × 3 = 30 -1 = 29