Numerical Puzzles Quiz Questions and Answers

7. Which number goes in the empty circle and completes the puzzle?
  What is the next number?
Answer
Ans = 6.
The sum of the numbers in the lines of three going upwards equal the sum of the numbers in the lines of three going downwards.
8. Which number is missing from the last circle?
  What is the next number?
Answer
Ans = 21.
In each circle, staring top left and moving clockwise, multiply the first number by 3 and subtract 3 to give the next value.
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