Quantitative Aptitude - Arithmetic Ability Questions

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?

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

If x+1x = 4, then what is the value of x6+1x6 ?

Rohit buys a ball for Rs 450 and sells it. Rohit gives two successive discount of 20% and 5% to the customer. What will be the selling price (in Rs) of the ball?

Select the odd letters from the given alternatives.

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

If 4x + 3y = 11 and 3x + 2y = 8, then (x,y) is

If 3x + 4(1-x) > 5x -2 > 3x - 4; then the value of x is