SAT Math Practice Exam

Category - Mathematics - Hard

How many multiples of 5 are there between 10 and 95 , inclusive?
  1. 17
  2. 18
  3. 19
  4. 20
  5. 21
Explanation
Answer B- There are 2 multiples of 5 in every tens. 8x2 +1+1= 18

Key takeaway: Multiples of 5 are 5,10,15, 20, 25………………90, 95, 100 ………. Every ten has 2 multiples of 5 . Be careful to count the inclusive numbers at the both ends.
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