3 years ago

If the ratio of bananas to apples is 2:1 and there are 24 apples, how many bananas are there?

Mathematics

1 answer:

Phantasy [73]3 years ago

5 0

Bananas to apples = 2:1
bananas = 2×24
= 48

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$^{21}C_2\times^{129}C_2\\\\=\dfrac{21!}{2!(21-2)!}\times\dfrac{129!}{2!(129-2)!}\\\\=\dfrac{21\times20\times19!}{2\times19!}\times\dfrac{129\times128\times127!}{2\times127!}\\\\=210\times8256= 1733760$

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