How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

What is next number in the pattern below:

131 517 192 123 ?

Which is the rope you never skip with?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

Find the next number in the series.
1 10 24 43 67 ?

Replace the question mark in the picture below.

What number do you get when you multiply all of the numbers on a telephone's number pad?

The centre of the third figure is empty. What digit should fit inside?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6