you have 8 kinds of writing paper and 5 envelope colors. how many parings of one kind of writing paper and one envelop color is
1 answer:
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Answer:
Step-by-step explanation:
The greatest common factor of 36 and 63 is 9.
Thus, =
since (36 ÷ 9 = 4) and (63 ÷ 9 = 7).
Answer:
Cr = 10
Step-by-step explanation:
To calculate combinations we use the nCr formula: nCr = n! / r! * (n - r)!, where n = number of items, and r = number of items being chosen at a time.
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