Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 3 and a2+b2=25, then the value of ab is

Two donkeys are standing 400 meters apart. First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. If two donkeys run towards each other after how much time (in sec) will they bump into each other?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

Find the value of '?' in 512 × 125 ÷ 15625 = 3125 × 25?

What is the third proportional to 10 and 20?

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?

Sec 45% + Tan 30% =

Simplify (b5x2a3z4)*(b3x2a4z5) / (a2b3z2)