Quantitative Aptitude - Arithmetic Ability Questions

What is the value of a-b when a2+b2-6a-6b+18 = 0 ?

What least number must be subtracted from 3401, so that the sum is completely divisible by 11?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(-2,5), B(3,-2) and C(5,3)?

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

For which value of ‘g’ the linear graph of 6x + 12y +9 = 0 and 2x + gy + 3 = 0 has infinite number of solutions?

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in x-axis to (-3,4). The co-ordinates of point R are

If a-1a=1, then a2 + 1a2 ?

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by