It Figures

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 A 3x3 square within this grid lists all the even numbers. 2 The numbers in Row D have the third largest sum which is 26. 3 The largest prime number ends a column which lists three consecutive descending multiples of 4. 4 The bottom left square is the only corner which does not contain a single digit square number. 5 The last two numbers in Row C are twice as big as those directly below them. 6 The numbers in Row B are written in ascending order.

LEVEL 2 - SENIOR ANALYST

7 The product of the outer two numbers in Row B is 165. 8 The smallest number in the second column is 8.

LEVEL 3 - LAB ASSISTANT

9 The product of the middle two numbers in Column 1 is 33. 10 14 does not share a row or column with any of its single digit factors.