CBSE - Aptitude Mathematics

If A and B are square matrices of the same order such that AB = A and BA =B, then (A +B ) is equal to: 1. A - B 2. A + B 3. AB 4. None of these

Each edge of a cube is increased by 50%. The percentage increase in its surface area will be : 1. 200% 2. 100% 3. 85% 4. 125%

A reduction of 20 percent in the price of apples would enable a purchaser to get 2 dozen more for Rs. 5 Find the reduced price per dozen. 1) Rs.2 2) Rs.3 3) Rs.4 4) NONE OF THESE

If x and y are negative numbers, which of the following statements is (are) always true? I. x - y is negative II. -x is positive III. (-x) (-y) is positive 1. I only 2. II only 3. I and II only 4. II and III only

Three persons starts business and make profit of Rs. 1176. If their capital are as 1/5,1/6,1/3, how should the profit be divided? (1) Rs. 500, 386. 290 (2) Rs. 490, 396, 290 (3) Rs. 336, 280, 560 (4) Rs. 476, 420, 280