<span>R−Z</span><span> is a union of countable many open sets so </span><span><span>R−Z</span><span>R−Z</span></span><span> is open
I actually didn't know that I had to look it up and got my answer from another site, oppsie doopsies
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<span>- lithium, beryllium, and boron
- nitrogen, arsenic, and antimony
- potassium, calcium, and gallium
- cesium, platinum, and radon</span>
Answer:
2/9 is the probability.
Step-by-step explanation:
Hope's this helps.
<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:
the answer is $39.00
Step-by-step explanation:
