Quantitative Aptitude - Arithmetic Ability Questions

If 21% of an electricity bill is discounted, Rs 1817 is still to be paid. How much was the original bill amount?

Marked price of an item is Rs 500. On purchase of 2 items discount is 8%, on purchase of 3 items discount is 16%. Radha buys 5 items, what is the effective discount?

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

Rohan borrowed a certain sum of money at simple interest. Rate of interest was 3% per annum for first 3 years, 4% per annum for next 5 years and 6% per annum for next 7 years. If he paid Rs 2059 as interest, then what is the sum borrowed (in Rs)?

To travel 648 km, an Express train takes 12 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less than Rajdhani. The speed of Rajdhani is _____.

A batsman has a certain average of runs for 12 innings. In the 13th inning he scores 96 runs thereby increasing his average by 5 runs. What will be his average after 13th inning?

In the following question, select the odd word from the given alternatives.

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?