Quantitative Aptitude - Arithmetic Ability Questions

The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is

If two successive discounts of 50% and 10% are offered, then what is the net discount (in %)?

In a one day match of 50 overs in an innings the team A had a run rate of 5.3 runs per over. Team B is playing and 5 overs are left and the required run rate to tie the match is 7.2 per over to match the score of Team A. What is team B's score?

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

If x2 – 4x + 1 = 0, then what is the value of x9 + x7 – 194x5 – 194x3?

If a + b = 1 and ab = -6, then what is the value of a3+ b3?

An octahedron has 6 vertices. How many edges does it have?

What is the reflection of the point (-0.5, 6) in the x-axis?