Quantitative Aptitude - Arithmetic Ability Questions

The sum of two numbers is 7 and the sum their squares is 23, their product is equal to:

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

Sowing, Irrigation, Hoeing, ?

If (4/5)A = 3B = (2/3)C, then what is A : B : C?

If a+bab=21 ,  then the value of (a-b) is

Δ LMN is right angled at M. If m∠N = 45°, what is the length of MN (in cm), if NL = 9√2 cm?

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

What is the average of all numbers between 100 and 200 which are divisible by 13?

If a certain sum of money doubles itself in 7 years 8 months at simple interest, then what will be the yearly rate of interest (in %)?