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 The highest prime begins a row that ends with the first three consecutive numbers 2 The product of the first two numbers in Row A is exactly four times greater than the product of the last two numbers in Row D 3) The number with the most factors separates two single digit square numbers in the bottom row 4) The three ascending two-digit numbers ending Row A have a sum of 35 5) The largest odd is the only number in Row B which does not have a factor written in the square below it
LEVEL 2 - SENIOR ANALYST
6 The range of Row A is 6 7 The sum of Column 3 is 33 8 The largest number in the diagonal with a negative gradient is 8
LEVEL 3 - LAB ASSISTANT
9 The product of the last two numbers in Column 4 is 15 10 The difference between the smallest and largest number in Row B is 10 11 There is an odd square number in the bottom left corner