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Problems
Contests
National and Regional Contests
USA Contests
USA - Middle School Tournaments
Math Invitational for Girls
2019 MIG
21
21
Part of
2019 MIG
Problems
(1)
2019 Individual #21
Source:
5/1/2022
The first
32
32
32
perfect squares,
1
1
1
,
4
4
4
,
9
9
9
,
16
16
16
,
25
25
25
,
…
\ldots
…
,
961
961
961
,
1024
1024
1024
are combined together into one large number by appending their digits in succession, forming the number
N
=
1491625
…
9611024
N = 1491625\ldots9611024
N
=
1491625
…
9611024
. How many digits does
N
N
N
have?
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A
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84
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B
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85
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(
C
)
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86
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(
D
)
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87
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(
E
)
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88
<span class='latex-bold'>(A) </span>84\qquad<span class='latex-bold'>(B) </span>85\qquad<span class='latex-bold'>(C) </span>86\qquad<span class='latex-bold'>(D) </span>87\qquad<span class='latex-bold'>(E) </span>88
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)
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84
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(
B
)
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85
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(
C
)
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86
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(
D
)
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87
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>
(
E
)
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88
2019 Individual