A superadditive function f() satisfies the following propertyf(x1+x2) ≥ f(x1) + f(x2)Which of the following functions is a superadditive function for x > 1?

It is quarter past three in your watch. The angle between the hour hand and the minute hand is

A circle with centre O is shown in the figure. A rectangle PQRS of maximum possible area is inscribed in the circle. If the radius of the circle is a, then the...