A rectangular field is 112 mt. long and 62 mt. broad. A cubical tank of edge 6 mt. is dug at each of the four corners of the field and the soil so removed is evenly spread on the remaining field. Find the rise in the level of the field.

The first pair of numbers bear a certain relationship. The same relationship is required to be found in the other pair, Find that missing number : 35 : 6 : : 120 :?

Which one of the following is the correct sequence in respect of the Roman numerals—C, D, L and M?

The mean and standard deviation of 100 observations are 25 and 9 respectively. If 6 is subtracted from each observation, then mean and standard deviation will respectively be

When a polynomial p(x) is divided by (x − 1) and (x − 2) it leaves remainders 5 and 7 respectively. What is the remainder when p(x) is divided by (x − 1)(x − 2)?

What is the greatest possible speed at which a person can walk 13·3 km and 20·9 km so that the time (in hours) required in each case is a whole number?