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Number Puzzles Questions and Answers

Puzzles
49. What number should replace the question mark?
Ans: 11.
Sol.
Each adjacent group of three numbers total 23 i.e.
11 + 5 + 7 ;
6 + 12 + 5
 
50. What is X?
Ans: 12
Sol.
The series must be read backwards and spaced correctly :
1 2 3 4 5 6 7 8 9 10 11 12(X)
 
51. Find five consecutive numbers below that total 23?
947251739244572561854
Ans: 45725
Sol.
45725.