1. Product of three consecutive numbers 210. What is the sum of two least numbers?

ans.: 5 * 6 * 7 = 210 , sum = 11 is answer

2. If the area of the square is increased by 69 % how much the length of the side will increase?

ans.: 13 (i think)

3. if the sum of five consecutive numbers 35? how many prime numbers are there :

ans: 5 + 6 + 7 + 8 + 9 = 35 so two primes

4. if the length of the rectangle is reduced by 20% and breath is increased by 20 % what is the net change ?

ans.: 4 % decrease

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