Numeric Puzzles
41.
Which number replaces the question mark ?
Answer
Each row and column of the diagram adds up to 15.
Answer :
6Explanation :
Each row and column of the diagram adds up to 15.
42.
Which number replaces the question mark ?
Answer
Starting on the left, halve the first number and add it to the second number to give the next one along. Repeat this sequence all the way to the right.
Answer :
25Explanation :
Starting on the left, halve the first number and add it to the second number to give the next one along. Repeat this sequence all the way to the right.
43.
Which number replaces the question mark ?
Answer
Working in rows, starting with the central row, add the left and right hand digits together and put the result in the central space. Repeat for the upper and lower rows, but put the result in the opposite central space.
Answer :
4Explanation :
Working in rows, starting with the central row, add the left and right hand digits together and put the result in the central space. Repeat for the upper and lower rows, but put the result in the opposite central space.
44.
Which number replaces the question mark ?
Answer
Starting with the top 3 digit number, the first digit increases by 2 as you descend, from 1 to 11. The middle digit decreases by 1 each time, and the right hand digit alternates between 5 and 3.
Answer :
1143Explanation :
Starting with the top 3 digit number, the first digit increases by 2 as you descend, from 1 to 11. The middle digit decreases by 1 each time, and the right hand digit alternates between 5 and 3.
45.
Which number replaces the question mark ?
Answer
The numbers in each row of the diagram add up to 18.
Answer :
7Explanation :
The numbers in each row of the diagram add up to 18.
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