↳ To determine how many ways of committies can be formed, here's the formula that we could use.
↳ Since, committee consists of 3 members from 9 people, so we'll need to write the equation as.
↳ Substitute the given value to determine how many committies can be formed.
↳ Subtract the group of members in 9 people.
↳ Multiply 9-1 and 6-1, then cancel out the number with similar value.
↳ Multiply the remaining number.
↳ Divide 504 to 6.
∴ Therefore, 84 ways of committies it can be formed.
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↳ To determine how many ways of committies can be formed, here's the formula that we could use.
↳ Since, committee consists of 3 members from 9 people, so we'll need to write the equation as.
↳ Substitute the given value to determine how many committies can be formed.
↳ Subtract the group of members in 9 people.
↳ Multiply 9-1 and 6-1, then cancel out the number with similar value.
↳ Multiply the remaining number.
↳ Divide 504 to 6.
∴ Therefore, 84 ways of committies it can be formed.