BrainDen.com - Brain Teasers

# Utkrisht123

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1. ## What is ....

What is the value of (m-a)(m-b).............................(m-y)(m-z)
2. ## logic logic

How many sides does a hexagonal pencil have?
3. ## An A.p.(Arithmetic proggression)

Give an A.P of 3 term whose product is a prime number.
4. ## Two parts of 30

Divide 30 into two parts such that their product is a prime number.
5. ## Matchstick puzzle 1

Here 40 matches are arranged to form 30 squares ( 16 small , 9 big , 4 bigger and 1 biggest ). Now can you remove 9 matchstick so that no square remain.
6. ## Impossible became possible 1

Two persons are running towards each other i.e in an opposite directions, at a speed of 10m/s, but their relative speed is 30m/s. Is it possible? How?

9. ## Impossible became possible

The distance between centres of two circles having radius 5 cm each is 10 cm. Suprisingly these two circles don't touch each other. How is this possible?
10. ## Very easy

You have 16 chocolates and you want to share it equally with your three friends. How will you share and how much will each get? (Note : You cannot throw any chocolate away or divide the chocolate in half or one third)
11. ## 45 puzzle

O.K. Sorry for that But when you have understood the question can you find the answers?
12. ## 45 puzzle

Good guess. can you find one more
13. ## 45 puzzle

Take 45 away from 45 and leave 45 as remainder. If you think it is impossible then think once again. Here is one way 987654321 = 45 -123456789 = 45 -------------------------- 864197532 = 45 Using the same system, can you find another way?
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