How many multiples of 7 are there between 100 and 300?
Answer and explanation
Correct answer: C. 28
- Step 1: The first multiple of 7 above 100 is 105 and the last below 300 is 294. Step 2. The count is (294 - 105) ÷ 7 + 1 = 27 + 1 = 28. Answer: 28. Why not the others: 27: This misses one multiple, usually the first one, 105. 29: This rounds up 200 ÷ 7 = 28.57 instead of counting the multiples. 30: This adds 2 for the ends, but 100 and 300 are not multiples of 7.
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