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USA - Middle School Tournaments
Math Invitational for Girls
2019 MIG
13
2019 Individual #13
2019 Individual #13
Source:
May 1, 2022
2019 Individual
Problem Statement
What is the remainder when
1
+
10
+
19
+
28
+
⋯
+
91
1 + 10 + 19 + 28 + \cdots + 91
1
+
10
+
19
+
28
+
⋯
+
91
is divided by
9
9
9
?
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A
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C
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3
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D
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4
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(
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8
<span class='latex-bold'>(A) </span>0\qquad<span class='latex-bold'>(B) </span>2\qquad<span class='latex-bold'>(C) </span>3\qquad<span class='latex-bold'>(D) </span>4\qquad<span class='latex-bold'>(E) </span>8
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2
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3
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4
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E
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8
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