INSTRUCTIONS Using the clues below place the numbers 1 to 16 correctly in the grid. How many clues do you need?
LEVEL 1 – CHIEF SCIENTIST
1 Every composite number less than 15 is adjacent to exactly two of its factors. The only non-prime number in Row A is the highest in that row.
The numbers in Row D are all divisible by 3.
4 The product of the down sloping diagonal is 30.
5 The sum of the last two numbers in Column 1 is 26.
LEVEL 2 – SENIOR ANALYST
6 The numbers in Row B are all even.
7 The number beginning Column 1 is half as
big as the number directly below it.
LEVEL 3 – LAB ASSISTANT
8 There are two square numbers in Column 4.