Question by Lê Anh Duy - Discuss with MathYouLike

Lê Anh Duy

15/04/2018 at 11:56

8) In the sum, each \(\boxtimes\) represent a non-zero digit. What is the sum of all the 6 missing digits?

202 + \(\boxtimes\boxtimes\boxtimes+\boxtimes\boxtimes\boxtimes\) = 2002

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Dao Trong Luan Coordinator 15/04/2018 at 12:22

202 + ⊠⊠⊠ + ⊠⊠⊠ = 2002

=> ⊠⊠⊠ + ⊠⊠⊠ = 2002 - 202 = 1800

We have: 819 + 981 = 1800; 849 + 951 = 1800;.........

So the sum of all the 6 missing digits are: 8 + 1 + 9 + 9 + 8 + 1 = 8 + 4 + 9 + 9 + 5 + 1 = ... = 36
Lê Anh Duy selected this answer.
¤« 16/04/2018 at 13:56

202 + ⊠⊠⊠ + ⊠⊠⊠ = 2002

=> ⊠⊠⊠ + ⊠⊠⊠ = 2002 - 202 = 1800

We have: 819 + 981 = 1800; 849 + 951 = 1800;.........

So the sum of all the 6 missing digits are: 8 + 1 + 9 + 9 + 8 + 1 = 8 + 4 + 9 + 9 + 5 + 1 = ... = 36

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