Answer:
3
Step-by-step explanation:
<u>3</u>,6,9,12,15,18,21,<u><em>24</em></u>
<u>3</u>,6,9,12,<em><u>15,</u></em>18,21,24
Here ^^
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<u><em>A≈78.54</em></u>
<u>to be exact it would be 25</u>
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<em>bye have a good morning/afternoon/evening!! <3</em>
<u><em>- berry</em></u>
<u>We are given:</u>
The time-traveller has 79 books, but he can only take 5 books
since we need to find the number of ways he can choose 5 books, we know that the order in which he takes the books does NOT matter
Hence, we will use combination
<u>Finding the number of ways:</u>
Since we will use combination, ₇₉C₅
We know that the formula for combination is (n!) / (r!(n-r)!)
₇₉C₅ = 79! / 5!(74!)
₇₉C₅ = 22,537,515
Therefore, the time traveller can choose 5 books in 22,537,515 different ways
Answer:
it is 5
Step-by-step explanation:
