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Stella [2.4K]
3 years ago
10

An Earth scientist is testing how vanous soil mixtures affect plant growth. She begins with 10 soil types. For each mixture, she

combines equal amounts of 2 sod types. How many soil mixtures must the scientist create in order to test all possible combinations of the 10 soil types?​
Biology
1 answer:
nevsk [136]3 years ago
3 0

The correct answer to my knowledge would be 45.

Assuming that the 10 soils are each represented by A, B, C, D, E, F, G, H, I, J.

A can combine with 9 others as: AB AC AD AE A F AG AH AI AJ

B can combine as: BC BD BE BF BG BH BI BJ

C as: CD CE CF CG CH CI CJ

D as: DE DF DG DH DI DJ

E as: EF EG EH EI EJ

F as: FG FH FI FJ

G as: GH GI GJ

H as: HI HJ

I as: IJ

Once you add all the combinations together, you get 45.

Hoping this helped you!

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