If a is between 0 and 1, which of the following statements is (are) true? (i) a² − 1 > 0 (ii) a² + 1 > 0 (iii) a² − a > 0

How many iron balls, each of radius 1 cm, can be made from a sphere whose radius is 8 cm?

The following pie chart provides information about the revenue share of six companies P, Q, R, S, T, U as a percentage of the total car market (in Rs.) in the year 2010. These are the only six companies producing cars in the market. Revenue share (2010): P 22%, Q 26%, R 12%, S 10…

In how many years will Rs. 2 lakh double itself at 11.5% per annum simple interest?

If AB + C = D, find A and C given that when B = 6, D = 30 and when B = 8, D = 36.

If y² + 3y − 18 ≥ 0, which of the following is true?

In how many different ways can 3 red balls, 2 blue balls and 4 yellow balls be arranged so that the balls of the same color come together?

The following table shows the courier charges (in Rs.) for sending 1 kg parcel from one city to another (row = from, column = to). Cities | Ahmedabad | Mumbai | Kolkata | Bangalore | Jaipur Ahmedabad | - | 10 | 5 | 15 | 10 Mumbai | 10 | - | 7 | 25 | 20 Kolkata | 5 | 7 | - | 20 |…

Three numbers X, Y and Z are in the ratio of 12 : 15 : 25. If the sum of twice of these numbers is 614, the ratio between the difference of Y and X and the difference of Z and Y is: