Student: Find the average of all the numbers between 6 and 34 which are divisible by 5.\nOptions:\n(A) 22\n(B) 20\n(C) 288\n(D) 277\n(E) 21.
Another student: Let's say, hmmm...

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Average = (10 + 15 + 20 + 25 + 30)/5 = 100/5 = 20. Final answer: (B).
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