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1. What is the number of integers between 101 and 199 which are exactly divisible by 5 or 7?
- A. 30
- B. 30
- C. 30
- D. 30
Answer: Option A
Explanation:
LCM of 5 and 7 is 35
No. of integer between 101 and 199 devided by 35 is 3
No.of integer between 101 and 199 devided by 5 is 19
No of integer between 101 and 199 devided by 7 is 14
so, No.of integer between 101 and 199 divided by 5 or 7 are = 19 + 14 - 3 = 30
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