In how many test matches did Ravichandran Ashwin achieve the feat of becoming the fastest player in the world (in terms of number of matches) to get 300 wickets in test cricket in November 2017?
A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is
If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, the compound interest on the same at the same rate and for the same time is: