Questions

An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

Two smaller circles touch a large circle internally and pass through the center O of the larger circle. If the diameter of the bigger circle is 28 cm, thenwhat is the area of the bigger circle which is not enclosed by the two smaller circles (in sq.cm)?

It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the car is:

ΔABC is right angled at B. BD is an altitude. AD = 3 cm and DC = 9 cm. What is the value of AB (in cm)?

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

If the diameter of a sphere is 14 cm, then what is the surface area (in sq.cm) of the sphere?

Which Indian badminton player won the silver medal in the 2016 Rio Olympics?

Who is the author of the speculative fiction book 'Half of What I Say'?