Quantitative Aptitude - Arithmetic Ability Questions

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

Which of the following equations has real and distinct roots?

ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?

The marked price of a pen is Rs 3000. The shopkeeper gives two successive discounts of 15% and a% to the customer. If the customer pays Rs 2142 for the pen, then what is the value (in percentage) of a?

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

A bag contains coins of denominations Rs.1, Rs.5 and Rs.10. Assuming there are equal number of Rs.1, Rs.5 and Rs.10, what will be the total number of coins in the bag be if the total money is Rs. 368?

The ratio of two numbers is 5 : 6. If their product is 1470, then what is the sum of both the 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.