Answer:

Option D is the correct option
Step-by-step explanation:
Let the sets be A and B.
A = { 1 , 2 , 3 , 4 , 5 }
B = { 2 , 4 , 6 , 8 , 10 }
<u>Finding </u><u>A</u><u> </u><u>union</u><u> </u><u>B</u><u> </u><u>(</u><u> </u><u>A</u><u> </u><u>∪</u><u> </u><u>B</u><u> </u><u>)</u>
<u>The</u><u> </u><u>union</u><u> </u><u>of </u><u>sets</u><u> </u><u>A</u><u> </u><u>and</u><u> </u><u>B</u><u> </u><u>is </u><u>the </u><u>set </u><u>of </u><u>all</u><u> </u><u>elements</u><u> </u><u>which</u><u> </u><u>belongs</u><u> </u><u>either</u><u> </u><u>A</u><u> </u><u>or </u><u>B</u><u> </u><u>or</u><u> </u><u>both</u><u> </u><u>A</u><u> </u><u>and</u><u> </u><u>B</u>
So, list them :
A ∪ B = { 1 , 2 , 3 , 4 , 5 , 6 , 8 , 10 }
Hope I helped!
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We need to work with the same units, so first, we convert 1 km to cm.
1 km = 1000 m
1 m = 100 cm
1 km = 100,000 cm
Now we divide 100,000 cm by 5 cm.

Answer: It will take 20,000 years.
Answer:
show the question
Step-by-step explanation:
There will be 5 columns, since 5 rows of six chairs would be 30 chairs overall
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