Quantitative Aptitude - Arithmetic Ability Questions

The average age of 6 members of a family is 20 years. If the age of the servant is included, then the average age increase by 25%. What is the age (in years) of the servant?

90% of X = 40% of Y and Y = a% of X. What is the value of a?

If the product of two numbers is 4941 and their LCM is 81, then their HCF is :

What is the value of tan 7π/6?

If x+y+z = 1, 1/x + 1/y + 1/z = 1 and xyz = -1, then x3+y3+z3 is equal to

In a triangle the length of the side opposite the angle which measures 30 degree is 12 cm, what is the length of the side opposite to the angle which measures 60 degree?

Findout the odd word/letters/number/number pair from the given alternatives.

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