CBSE - Aptitude Mathematics

The diameter of the base ,of a cone is 42 cm and its valume is 12936 cm3. Its slant height is 1) 30.00 cm 2) 42.60 cm 3) 67.48 cm 4) 35.00 cm .

In a distribution, the mean deviation is 360, the median is 16 then coefficient of mean deviation from median is 1. 20.0 2. 22.5 3. 25.0 4. none of these

If a cistern is 3 metre long, 2 metre wide and 1 metre deep, its capacity in litres is (1) 6 (2) 600 (3) 6000 . (4) 60000

Amulya covers a distance of a few km from Anganwadi to Balwadi at a speed of 20 km/hr and returns from Balwadi to Anganwadi at a speed of 60 km/hr. What is his average speed for the entire journey? 1. 30 km/hr 2. 36 km/hr 3. 24 km/hr 4. 48 km/hr

If (-4, 5) is one vertex and 7x - y +8 = 0 is one diagonal of a square, then the equation of the second diagonal is: 1. x + 3y = 21 2. 2x - 3y = 7 3. x + 7y = 31 4. None of these