Can you count the number of matches in the picture below ?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

81 x 9 = 801. What must you do to make the this equation true?

With the help clues provided in the image, can you find the 5 digit key?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Why is the Hole below a Lock?

Why is a river so rich ?