Question

Abishek 5 pairs of shoe laces 2 pair of black shoe laces and 7 pairs of shoes. What is the ratio of pairs of shoe laces to pairs of shoes?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

We select 4 pairs out of 5 which can be chosen through 5C4 ways.

For every selected pair select any one shoe which can be done in (2C1)4 ways.

∴ Total no: of ways = 5C4∗(2C1)4=80 ways.