Quantitative Aptitude - Arithmetic Ability Questions

If a = √2 + 1, b = √2 - 1 then the value of 1a+1+1b+1 ?

The difference between compound interest compoundedevery 6 months and simple interest after 2 years is 248.10.The rate of interest is 10 percent. Find the sum

A person crosses a 900 metres wide road in 120 seconds. What is his speed (in km/hr)?

A dishonest shopkeeper uses a weight of 850 gm instead of 1 kg and sells rice on its cost price. What will be his profit percentage on selling 5 kg rice?

A batsman scores 98 runs in the 17th match of his career. His average runs per match increased by 2.5. What is his average before the 17th match?

Two numbers whose sum is 84 can not be in the ratio

The third proportional of two numbers 7 and 21 is

If on a Sale there is 30% discount on the marked price of Rs 2500, but the sale is done at Rs 1400 only. What additional discount (in %) did the customer get?