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.

What is the value of Sin 30° + Cos 30°?

On a certain principal if the simple interest for two years is Rs 2800 and compound interest for the two years is Rs 2996, what is the rate of Interest?

What is the quotient when 1359 is divided by 48?

If the product of two numbers is 2522 and their LCM is 97 then their HCF is

In the following question, select the related number from the given alternatives.
 
47 : 57 : : 93 : ?

Present age of Anil and Rajesh are in the ratio of 11 : 6 respectively. 9 years ago, their ages were in the ratio of 7 : 3. If the Pankaj’s present age is 1/4 of the Anil’s present age, then what is the Pankaj’s present age (in years)?

A sum of money invested for 2 yrs and 9 months at the rate of 8% simple interest per annum became Rs.732 at the end of the period. What was the sum that was initially invested?