Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of 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.

Selling price of an article is Rs 494 and discount of 5% is offered. What is the marked price (in Rs)?

Two numbers are 50% and 80% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

What is the equation of the line passing through the point (-1,3) and having x-intercept of 4 units?

Gitesh took a loan for 4 years at 5% Compound Interest. If the total interest paid was Rs. 431.01, Calculate the principal.

Selling price of a table is Rs 2808. If profit percentage is 17%, then what is the cost price (in Rs) of table?

What is the value of tan3A?

If sec2θ+tan2θ=3, then sec4θ-tan4θ =