John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

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

Which is the smallest number that you can write using all the vowels exactly once?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Different lights make me strange by changing me into different sizes. What am I?

Can you count the number of squares in the figure below?

Find the hidden tiger in the given optical illusion ?

What do you think with the below Picture ?

What breaks yet never falls, and what falls yet never breaks?