500+300=800 hope this helped:)
Answer:
First do the case in which none of the digits is 0.
There are 9 ways to choose the digit that repeats 3 times and 8 ways to pick the other, after this there are 4 ways to order the digits. So 9×8×4.
Now we look at the cases in which the digit 0 repeats 3 times. Clearly the 9 numbers are 1000,2000,3000,…,9000.
Lastly we look at the cases in which 0 appears once. There are 9 ways to pick the other digit and 3 ways to order.
So the final answer is 9×8×4+9+9×3.
It’s the s California nd one
<span><em>"2 batches of soup will serve 8 people."</em>
<u>Then x </u></span><span><u>batches of soup will serve 120 people
</u>120.2 = 8.x
x = 30 batches of soup will serve 120 people.
<em>"2 onions for 1 batch"</em>
<u>Then y onions for 30 batches
</u>30.2 = 1.y
y = 60 onions<u>
</u></span>
GCF = 1 since most of them are not prime factors
