Which Indian cricketer is known as "Brown Bradman"?

Which of the countries has had a prime minister whose name featured the name of his country?

Which of the gulf city was a dependency of Bombay Presidency under British rule for almost a century?

Which colour has the shortest wavelength?

A 300m long train crosses a platform in 39 seconds while it crosses a signal pole in 18 secs.what is the length platfrm

whats biology

What is motion?

Who invented the Logarithm tables ?

Who was the first person to defeat Muhammad Ali during his professional career?

Why is organic compounds volatile???

81

1,2 to 99- 99 of total numbers 1, 2 to 9- 9 of 1-digit numbers 11, 22 to 99- 9 of double same digit numbers 99-9-9=81 is the answer

How many different numbers can you make if you use the digits 1, 2, 3, 4 once each, in any order, and a times sign. For instance 31x24, or 2x413.

How many different numbers can be made using only the digits 1, 2, 3, 4 and a + sign? For instance 31+24, or 1+243.

How many different positive numbers (integers) can you make using each of the digits 1, 2, 3, 4, once only, and a take away sign?

Example 31-24, or 413-2