In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

If 21x = 79x, what is the value of x?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

Can you find out the remainder when 3^300 is divided by 5?

Solve the following series:
AZ, GT, MN, __, YB

Can you find the hidden animal in the picture below?

Can you find the thief by just looking at the picture below?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Can you fill the blank with the correct number?

6 30 870 756030 _____