## Brain Teasers (page 2)puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 11 to 20. |

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## Calculate the number 1100

NUMBERMANIA: Calculate the number 1100 using numbers [8, 7, 9, 3, 30, 669] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

**5**The first user who solved this task is

**Thinh Ddh**.#brainteasers #math #numbermania

## What is the missing number?

What is the missing number?Correct answers:

**31**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #riddles

## Remove 7 letters from this seq...

Remove 7 letters from this sequence (TRAOBBIDEMATARKEDM) to reveal a familiar English word.Correct answers:

**13**The first user who solved this task is

**Thinh Ddh**.#brainteasers #wordpuzzles

## MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (19, 22, 23, 24, 26, 28, 61, 64, 66, 93) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C.Correct answers:

**10**The first user who solved this task is

**Thinh Ddh**.#brainteasers #math #magicsquare

## Find a famous person

Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 5,4.Correct answers:

**6**The first user who solved this task is

**Thinh Ddh**.#brainteasers #wordpuzzles

## Find number abc

If 6c6a8 - b4393 = cba3c find number abc. Multiple solutions may exist.Correct answers:

**24**The first user who solved this task is

**Nílton Corrêa De Sousa**.#brainteasers #math

## What is the missing number?

What is the missing number?Correct answers:

**30**The first user who solved this task is

**Chandu Rajyaguru**.#brainteasers #math #riddles