Numeric Puzzles
26.
Which number replaces the question mark ?
Answer
Starting with the top left number, and working down one row at a time, alternating between left and right, double the number each time.Repeat this sequence, starting with the top right number.
Answer :
12Explanation :
Starting with the top left number, and working down one row at a time, alternating between left and right, double the number each time.Repeat this sequence, starting with the top right number.
27.
Which number replaces the question mark ?
Answer
Taking any side of the triangle, the sum of the two corner digits is written in one of the circles on that side, and the difference is written in the other circle.
Answer :
9Explanation :
Taking any side of the triangle, the sum of the two corner digits is written in one of the circles on that side, and the difference is written in the other circle.
28.
Which number replaces the question mark ?
Answer
The sum of numbers in each row and column equals to 15.
Answer :
6Explanation :
The sum of numbers in each row and column equals to 15.
29.
Which number replaces the question mark ?
Answer
Starting with the circle on the top left, and moving to the right, top row then bottom row, the sum of the numbers in each circle follows the sequence 12, 15, 18, 21 etc.
Answer :
1Explanation :
Starting with the circle on the top left, and moving to the right, top row then bottom row, the sum of the numbers in each circle follows the sequence 12, 15, 18, 21 etc.
30.
Which number replaces the question mark ?
Answer
Divide the diagram in half, horizontally and vertically, to give 4 squares, each 3x3. In each square, add up the 4 outer numbers, and put the result in the centre block.
Answer :
19Explanation :
Divide the diagram in half, horizontally and vertically, to give 4 squares, each 3x3. In each square, add up the 4 outer numbers, and put the result in the centre block.
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