Quantitative Aptitude - Arithmetic Ability Questions

The area of a square is 72.25 cm². Find its perimeter (in cm).

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and DE are 8 cm, 6 cm and 7.2 cm respectively, find length of BC?

The ratio of incomes of P and Q is 5 : 3. Ratio of income of Q and R is 5 : 2. If one-fourth of P’s income is Rs 500 more than the R’s income, then what is the income (in Rs) of Q?

What is the sum of a3+b3+c3-3abc, when the value of a=4, b=2 and c=-6?

If the standard deviation of a population is 10, what would be the population variance?

Find out the odd word/letters/number/number pair from the given alternatives.

In the given series of numbers how many 7's are there which are immediately followed by 9 and immediately not preceeded by 5 ?

The height of an equilateral triangle is 18 cm. Its area is