X = <span>width
2x-3 = </span><span>length
</span>
width = 6.5 m
length = 2x-3 = 2*6.5 - 3 = 10 m
2x-3 = </span><span>length
</span>
width = 6.5 m
length = 2x-3 = 2*6.5 - 3 = 10 m
{(-1, -1) (3.8) (2, 4)(2, 3), (7. -7) }
1 answer:
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Answer:
A person can select 3 coins from a box containing 6 different coins in 120 different ways.
Step-by-step explanation:
Total choices = n = 6
no. of selections to be made = r = 3
The order of selection of coins matter so we will use permutation here.
Using the formula of Permutation:
nPr =
We can find all possible ways arranging 'r' number of objects from a given 'n' number of choices.
Order of coin is important means that if we select 3 coins in these two orders:
--> nickel - dime - quarter
--> dime - quarter - nickel
They will count as two different cases.
Calculating the no. of ways 3 coins can be selected from 6 coins.
nPr = =
nPr = 120