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

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

The circumference of a circle is 110 cm. Find its radius (in cm).

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 lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :

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

If a + b = 1, then a4 + b4 - a3 - b3 - 2a2b2 + ab is equal to

√[(1 ­ sinA)/(1 + sinA)] is equal to?