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Number Puzzles Questions and Answers

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46. What number should replace the question mark?
Ans: 789.
Sol.
29 + 49 = 78 and
7 + 2 = 9
 
47. What is X?
Ans: 4×1/2 or 4.5
Sol.
In each quarter halve each total of the rings up to and including the centre.
Thus, in the bottom left quarter :
24 plus 12 = 36, 11 plus 7 = 18, 6 plus 3 = 9.
Therefore x = 4×1/2 or 4.5.
 
48. What number comes next?
482, 693, 714, 826, 937, ?
Ans: 148
Sol.
The numbers 48269371 are being repeated in the same sequence.