A restaurant charges service tax of A% up to the bill of Rs. 1,500 and the rate of service tax is B% for the bill amount exceeding Rs. 1,500. Jeshna pays a total tax of Rs. 250, when she orders food worth Rs. 4500 and she pays the total tax of Rs. 565 for the food worth Rs. 9000. What is the value of (A – B)?

For which of the following, any number of the form ${10}^n-1$ is divisible by 11.

Which of following will not leave any remainder when dividing 23n –1 for all the natural numbers ‘n’? 

Find the value of x if ${32}^{x-2}=\frac{64}{8^x}$

In a company, 10% of employees are from the actuarial department, 12.5% are from the production department, 16.66% are from the marketing department, 20% are from Accounting and Finance department and the rest are from R & D department.

What is the minimum possible number of employees from the R & D department?

The number of boys to that of girls in a school is 120 : 30. If 75% of boys and 70% of the girls are scholarship-holders. Find the percentage of students who do not get a scholarship?

A two digit number is subtracted from the number formed by reversing the digits. The resulting number will be a multiple of which of the following?

In a company of 120 employees, each employee got sweets that are 15% of the total number of employees. How many sweets were there?

Find the remainder of the expression.

$\frac{{10}^1+{10}^2+{10}^3+{\mathrm{....100}}^{100}}{6}$

The cost of ploughing a rectangular field whose length is 15 meters and breadth is 20 meters is Rs 20 per $m^2$.If the length of a rectangle is increased by 20% and breadth is decreased by 25% Find the cost of ploughing the new field .

400 people got the test done for diabetes and thyroid. 30% of people have diabetes and 45% of people have thyroid. If 50% of those who do not have thyroid also does not have diabetes then how many people have both?

If the numerator of a fraction is increased by 20% and its denominator by 25%, then the fraction so obtained is $\frac{3}{5}$. Find the original fraction. 

Find last digit of $2^{\left(27\right)^{2}}$ 

Free notebooks were distributed equally among students of a class. The number of notebooks each student got was 1/8th of the number of total students. Had the number of students been half, each student would have got 16 notebooks. How many notebooks were distributed in all? 

The difference of the squares of two consecutive odd integers is divisible by which of the following integer?