Quantitative Aptitude - Arithmetic Ability Questions

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

What least number must be subtracted from 518, so that the sum is completely divisible by 13?

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

What is the reflection of the point (6, -1) in the line y = 2?

What is the equation of the line whose y­-intercept is 4 and making an angle of 45° with the positive x-­axis?

What is the value of (cos 45 - 1/3) ?

Z’s present age is 55 years. If 11 years ago, C’s age was 1/11 of Z’s age, then after how many years C’s age will become 37 years?

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1