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3 years ago

Count the possible combinations of 3 letters chosen from A, B, C, D. The possible combinations of 3 letters are __.

Mathematics

2 answers:

anygoal [31]3 years ago

8 0

Answer:

Step-by-step explanation:

We are given the letters:

We write the possible permutations of 3 letters from the given list:

Because order is not important in a combination we cross out the duplicate pairs:

siniylev [52]3 years ago

6 0

Answer:

Step-by-step explanation:

n! / r!(n-r)!

n = # of total objects

r = # grouped together at a time

4! / 3!(4-3)!

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Keiko uses 6.9 pints of blue paint and white paint to paint her bedroom walls. 2/5 of this amount is blue paint, and the rest is

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Read 2 more answers

What percentage of births occurred among women between the ages of 40 and 42?

Paladinen [302]

The percentage of births that occurred among women between the ages of 40 and 42 is 26.41%

<h3>Calculations and Parameters</h3>

First, we would add up the ages of the mothers

27 +98+239+326+389+436+468+490+460+387+286+180+102+48+19+5+1

= 3961

Thus, to find the percentage of births occurring among women between the ages of 40 and 42 was:

102+48=150

3961/150= 26.41%