Quantitative Aptitude - Arithmetic Ability Questions

If the standard deviation of a population is 6.5, what would be the population variance?

Select the odd letters from the given alternatives.

In a number system, on dividing 11509 by a certain number, Mukesh gets 71 as quotient and 7 as remainder. What is the divisor?

Two trains are moving in the same direction at the speed of 23 km/hr and 77 km/hr. The time taken by faster train to cross a man sitting in the slower train is 40 seconds. What will be the length (in metres) of the faster train?

A point P lying inside a triangle is equidistant from the vertices of the triangle. Then the triangle has P as its

Find the circumference (in cm) of a circle of radius 17.5 cm.

What is the slope of the line parallel to the line passing through the points (3 , -4) and (-2 , 5)?

A boy spends Rs 20 to purchase toffees at Rs 1 each. Next day, he purchased some toffees for Rs 40 with a discount of 50 paise per toffee. What is the average price per toffee (in paise)?