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Gnoma [55]
2 years ago
8

Find the number of ways you can arrange (a) all of the letters and (b) two is the letters in the word ROCK. a. The number of way

s you can arrange all of the letters in the word is __. b. The number of ways you can arrange two of the letters in the word is __.
Mathematics
1 answer:
QveST [7]2 years ago
3 0

Answer:

a) 24

b) 12

Step-by-step explanation:

a) For the 4 letters of the word ROCK

Selecting any first letter, we have 4 options

for the second, we have 3 options

for the third we have 2 options

for the fourth, we have only one option

So the number of ways will be ;

4 * 3 * 2 * 1 = 24 ways

b) 2 out of 4

For the first letter, we have 4 options, for the second, we have 3 options

so the number of options is 4 * 3 = 12 options

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