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Re: GRE Math Challenge #75-What percent of the integers
[#permalink]
07 Aug 2017, 08:20
1
sandy wrote:
What percent of the integers between 200 and 999, inclusive, end with the digits “03”?
(A) 1% (B) 25 (C) 3% (D) 4% (E) 5%
A nice rule says: the number of integers from x to y inclusive equals y - x + 1 So, the number of integers from 200 to 999 inclusive = 999 - 200 + 1 = 800
How many of those 800 integers end in "03"? Well, we can quickly list them: 203, 303, 403, 503, 603, 703, 803, 903 There are 8 integers that end in "03"