Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

A blonde put eyeliner on her head. Why?

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.

what's the probability of getting a king or a queen from a pack of 52 cards?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

What can go through glass without breaking it?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

What is the next number in the series?

15 29 56 108 208 ?