Maths Puzzles Quiz Questions

5. Which number replaces the question mark and completes the sequence?
 
Answer
6
In each square, add up the outer three numbers, then add the two digits of the result together to give the central number.
6. Which number is missing?
 
Answer
20
In each circle, multiply the top two numbers together and subtract the lower right number to give the lower left number.
12345

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