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primary 6 | Maths
| Algebra
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Date Posted: 4 years ago
Views: 480
We can group these numbers in nice manners.
First and last
Second and second last
Third and third last
Etc.
We add these pairs together.
12345 + 54321 = 66666
12354 + 54312 = 66666
12435 + 54231 = 66666
Etc.
There will be 60 of these pairs, with a total sum of 66666 x 60 = 3 999 960.
First and last
Second and second last
Third and third last
Etc.
We add these pairs together.
12345 + 54321 = 66666
12354 + 54312 = 66666
12435 + 54231 = 66666
Etc.
There will be 60 of these pairs, with a total sum of 66666 x 60 = 3 999 960.
See 1 Answer
Correct answer ... Please refer to main comments.
Answer from Eric.
Answer from Eric.
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