Quantitative Aptitude - Arithmetic Ability Questions

Ages of Lalu and Balu are in the ratio of 1 : 2. After 7 years their ages ratio changes to 3 : 5. The elder person age is

A rectangular playground ground of length 125 m and width 75 m, has a walking strip of width 3 m in the middle of the ground, along the longer side. What is the area of the ground without the walking strip?

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

If 3a+4b3c+4d = 3a-4b3c-4d, then 

What is the value of √[(1 ­- cosA)/(1 + cosA)]?

The sum of 4x + 3y ­ 7z, x ­ y ­ z and ­2x ­ 3y + 4z is

The slopes of two lines are 1 and √3. What is the angle between these two lines?

Find out the odd word/letters/number/number pair from the given alternatives.