Quantitative Aptitude - Arithmetic Ability Questions

What approximate value should come in place of the question mark (?) in the following questions? (You are not expected to calculate the exact value.)

21.003 × 39.998 –209.91 = 126× ?

The bus fare between two cities is increased in the ratio 29:31. What is the increase in the fare, if the original fare is Rs 725

The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?

A train is moving at the speed of 72km/hr. How many seconds will it take to cover a distance of 1400 m ?

The length of the diagonal and the breadth of a rectangle are 26 cm and 10 cm respectively. Find its perimeter (in cm).

In ∆ABCif the median AD=1/2 BC, then ∠BAC is

If x+19x=4, then 9x2+19x2 is

Find out the odd word/letters/number/number pair from the given alternatives.