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May 15th, 2019, 08:15 PM   #1
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need help with homework

Hi All,

I need to find the missing number in the attached image. The numbers combine in the same way to make correct arithmetic statements.

Any help will be greatly appreciated.
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Last edited by skipjack; May 16th, 2019 at 06:49 AM.
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May 15th, 2019, 09:15 PM   #2
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14
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May 16th, 2019, 01:08 AM   #3
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Can you please explain to me how you reached the answer 14?

Last edited by skipjack; May 16th, 2019 at 06:44 AM.
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May 16th, 2019, 06:45 AM   #4
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The numbers in each diagonal have the same sum.

That sum is 10 in the first example, 9 in the second, 13 in the third, and (assuming the same rule applies) 17 in the final illustration, which implies the missing number is 14.
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May 16th, 2019, 08:26 PM   #5
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Thank you!
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