Quantitative Aptitude - Arithmetic Ability Questions

The average of 7 numbers is 30. If the average of first three numbers is 25 and that of last three numbers is 35, then what is the fourth number?

In triangle ABC, ∠ABC = 15 deg. D is a point on BC such that AD = BD. What is the measure of ∠ADC (in degrees)?

Select the odd word/letters/number/number pair from the given alternatives.

A discount of 45% on an article is equal to the discount of 65% on other article. What is the respective ratio of the marked price of both the articles?

A box consist of 5 rupees, 2 rupees and 1 rupee coins and their value are in the ratio of 15 : 4 : 2 respectively. If there are total 112 coins, then how many 2 rupees coins are there in the box?

If sec2A cosec2A = x, then x is

Simplify (b5x2a3z4)*(b3x2a4z5) / (a2b3z2)

If 9x - 6(3 - x) = 12, then the value of x is