Quantitative Aptitude - Arithmetic Ability Questions

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

If 3P/7 = 4Q/11, then what is the ratio of P and Q respectively?

If tan (5x ­- 10°) = cot (5y + 20°), then the value of x + y is

The ratio of two numbers is 5 : 9 and their difference is 44. What will be the smaller number among both the numbers?

Two pipes X and Y can individually fill a tank in 48 and 72 min respectively. If they are opened simultaneously, how long will it take for the tank to fill? 

What is the simplified value of (sec4 A – tan2 A) – (tan4 A + sec2 A)?

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

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 options.