Numeric Puzzles
1.
Which number replaces the question mark ?
Answer
In each triangle, the central value equals the average of the 3 values around the outside.
Answer :
12Explanation :
In each triangle, the central value equals the average of the 3 values around the outside.
2.
Which number replaces the question mark ?
Answer
Working in rows, the number in the central oval equals the sum of the left and right hand numbers, divided by 3.
Answer :
3Explanation :
Working in rows, the number in the central oval equals the sum of the left and right hand numbers, divided by 3.
3.
Which number replaces the question mark ?
Answer
Reading each column as a 3 digit number, moving from left to right, the columns follow the sequence of cube numbers of 5, 6 and 7.
Answer :
3Explanation :
Reading each column as a 3 digit number, moving from left to right, the columns follow the sequence of cube numbers of 5, 6 and 7.
4.
Which number replaces the question mark ?
Answer
Start with 1 and move clockwise. Multiply the previous number by 2 and add 4 to give the next number around.
Answer :
156Explanation :
Start with 1 and move clockwise. Multiply the previous number by 2 and add 4 to give the next number around.
5.
Which number replaces the question mark ?
Answer
Working from top to bottom, and reading each row as a 3 digit number, rows are arranged in order of the Square Numbers, from 11 to 15, with the digits reversed in each case.
Answer :
2Explanation :
Working from top to bottom, and reading each row as a 3 digit number, rows are arranged in order of the Square Numbers, from 11 to 15, with the digits reversed in each case.
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