A solid sphere of diameter 7 cm is cut into two equal halves. What will be the increase (in cm2) in the total surface area ?

A, B and C can complete a work in 10, 12 and 15 days respectively. All three of them starts together but after 2 days A leaves the job and B left the job 3 days before the work was completed. C completed the remaining work alone. In how many days was the total work completed?

By what least number should 1200 be multiplied so that it becomes a perfect square?

Which among the following Amendment Act is also known as 'Mini Constitution'?

In which language did Vardhaman Mahavira taught?

The exchange of materials between blood and interstitial fluid occurs only at the _____.

Which smallest number must be subtracted from 400, so that the resulting number is completely divisible by 7?

The sum of three consecutive even integers is 84. Which is the least integer among them?