Crossword Puzzles Questions

9. Which number is missing from the empty segment?
 
Answer
19
The numbers, starting at 2 and going clockwise around each circle, represent the first 9 prime numbers.
10. Which number replaces the blank and completes the sequence?
 
Answer
2
Working in columns, multiply the top and bottom values to get a 2 figure result, written in the 2 central squares.
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