Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letter group from the given alternatives.

Two cycles start from a house with a speed of 24kmph at interval of 15 min. With how much more speed in kmph the woman coming from the opposite direction towards the house has to travel to meet the cycles at an interval of 10 minutes?

A bus runs at 50 kmph. If the speed is increased by 10 kmph, it will cover 20 km more in the same time. Find the actual distance covered?

20 pens and 46 pencils were purchased for Rs. 235. If the average price of a pencil is Rs. 2.50 then calculate the average price (in Rs.) of a pen.

Calculate the value of 61681x61681-31681x3168130000

The side of an equilateral triangle is 14 cm. Find its area (in sq.cm).

A person borrows some money for 4 years at the rate of simple interest. If the ratio of principal and total interest is 5 : 1, then what is the rate ( in percentage) of interest?

(1 + sinA)/(1 - sinA) is equal to?