Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

A blonde put eyeliner on her head. Why?

Move three sticks of the spiral below to form a square.

What have one eye but still cannot see?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

How can you tell a raw egg from a hard-boiled egg?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?