Quantitative Aptitude - Arithmetic Ability Questions

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

46% of 250 is equal to

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]?

ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?

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

A, B and C can do a job working alone in 6, 9 and 18 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to complete the remainder of the job?

One of the two inlet pipes works twice as efficiently as the other. The two, working alongside a drain pipe that can empty a cistern all by itself in 8 hours, can fill the empty cistern in 8 hours. How many hours will the less efficient inlet pipe take to fill the empty cistern by itself?

The value of 1+tan2∅(1-sin2∅) is