Which Indian cricketer is known as "Brown Bradman"?

When was the first aircraft brought down by another in the course of World War I?

Which sea or ocean washes into the ports of Suriname?

In the SI system, what is the basic unit for the measurement of electric current?

In Greek mythology, who were the children of Uranus and Galatea?

When a snooker game is set up, what ball is set closest to the centre of the table?

What was the name of the German troops that were sent to assist General Franco in the Spanish Civil War?

What is the Sunday before Trinity Sunday?

The successive black notes on a piano is an example of what?

Widely known for his work on British television, for co-founding the Materials Library, and for talks on................

Add 11 once and remove 7 thrice 80+11 = 91 7X3 = 21 91-21 =70

Yes, because 80 + 11 - 7 = 84 is a multiple of 7.

? + ? + ? + ? + ? = 30

You have to fill numbers in place of question marks. The numbers that you can use are 1, 3, 5, 7, 9, 11, 13 and 15. You can repeat the numbers if you like.

Start with a three-digit number and repeat the digits to make a six-digit number, for instance 379379. Now divide by 7, then divide the answer by 11 and then divide this answer by 13. What do you notice, does it always happen and what is the explanation?