Quantitative Aptitude - Arithmetic Ability Questions

What is the average of first 19 odd numbers?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If two complementary angles are in the ratio of 2:3, find the ratio of square of smaller angle to square of greater angle.

If -3[1-(x/2)] + 5x/3 = 1/6, then what is the value of x?

ax + 5y = 8 has slope of -4/3. What is the value of a?

D and E are points on the sides AB and AC respectively of ΔABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ΔDEF and ΔCBF

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 25088, and Rs 28098.56 respectively, what is the rate of interest?

The radius of a cylindrical milk container is half its height and surface area of the inner part is 616 sq.cm. The amount of milk that the container can hold, approximately, is [ Use : √5 = 2.23 and π = 22/7 ]