- A9
- B10
- C8
- D7
Step-by-Step Solution
The cleaning dates are 2, 6, 10, 14, 18, 22, 26, 30: from 2 to 30 is 28 days = 7 gaps of 4, so 7 + 1 = 8 cleanings. (7 counts the gaps, not the days.)
Answer: C) 8
Beginning on the circled date, Tenzin cleans his aquarium every fourth day. How many cleanings are there in the month shown?
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