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natka813 [3]
4 years ago
13

Indicate the formula for the following conditions.

Mathematics
1 answer:
Molodets [167]4 years ago
8 0

Answer:

nCr = n! / (r!(n-r)!),

Step-by-step explanation:

The formula for C(n,r), also known as "n choose r" or a combination,

is: 

nCr = n! / (r!(n-r)!),

where n is the total number of options and r is number you must choose

The number generated is the total number of possible combinations. 

The ! means factorial. For example, 4! = 4 x 3 x 2 x 1

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The amount y ( in grams) of a radioactive isotope phosphorus-32 remaining after t days is y=a(0.5)^t/14, where a is the initial
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Answer:

Step-by-step explanation:

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