Quantitative Aptitude - Arithmetic Ability Questions

A train crosses a 550 m long platform in 36 seconds. How long was the train if it was travelling at the speed of 70 kmph?

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

After excluding stoppages, the speed of a bus is 60 kmph and after including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

Select the related word/letters/number from the given alternatives.
1 : 8 :: ? :64

Which one of the following is an irrational number?

If x = 11, the value of x5 - 12x4 + 12x3 - 12x2 + 12x - 1 is

If x2 – 12x + 33 = 0, then what is the value of (x – 4)2 + [1/(x – 4)2]?