Quantitative Aptitude - Arithmetic Ability Questions

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

Given a -­ b = 2, a3 - b3=26 then (a + b)2 is

Find the value of 62532+18

Common factor of 12a4b6, 18a6c2, 36a2b2 is

If cos 45° - ­ sec 30° = x, then value of x is

The average of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

The sum of the ages of husband and wife at present is 60. Four years ago the ratio of their ages was 7:6. What is the age of the husband?

What is the quotient when 7251 is divided by 66?