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Cracking the safe

Cracking the safe. Find the 6 digits needed to open the safe. _ _ _ _ _ _. The clues. The safe uses the numbers 2, 3, 5, 6, 8, 9 but in which order?. Position 1 42762. Position 2 51248. Position 3 43785. Position 4 32554. Position 5 21003. Position 6 52435.

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Cracking the safe

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  1. Cracking the safe

  2. Find the 6 digits needed to open the safe _ _ _ _ _ _

  3. The clues The safe uses the numbers 2, 3, 5, 6, 8, 9 but in which order? Position 1 42762 Position 2 51248 Position 3 43785 Position 4 32554 Position 5 21003 Position 6 52435 Work out the factors of each number to crack the safe.

  4. DIVISIBILITY TESTS Divisible by 2 – ends in an even number Divisible by 3 – sum of digits divisible by 3 Divisible by 4 – last 2 digits divisible by 4 Divisible by 5 – ends in a 5 or 0 Divisible by 6 – divisible by 2 and 3 Divisible by 7 – double last digit, subtract from rest of numbers, result divisible by 7 Divisible by 8 – last 3 digits divisible by 8 Divisible by 9 - sum of digits divisible by 3

  5.     

  6. 689235

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