If the present population of a village is 55,566, which was 35000 2 years ago, then find the rate of increase of population per year.

Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simultaneously at some time. They will again ring simultaneously after: 

In two successive year 100 and 75 students of school appeared at the final examination. Respectively 75% and 60 % of them passed. The average rate of pass is:

Direction : What should come in place of the question (?) in the following question.

(41) ² + (38)² × (0.15)²=?

A person invested a sum of Rs. 18,600 at x% per year and another sum that is twice the former at (x+2)% per year, both at simple interest. If the total interest earned on both investments for $$ {3{1\over 2}}$$ years is Rs.23,110.50, then the rate of  interest per year on the second investment is:

If an 8-digit number 1862383A is divisible by 22, find the value of A.

If difference of cube and square of a number is 100 and difference of square and number is 20, then value of number is