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How many integers from 101 to 800, inclusive, remains the

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Status: Learning
Joined: 20 Dec 2015
Posts: 1169
Location: India
Concentration: Operations, Marketing
GMAT 1: 670 Q48 V36
GRE 1: Q157 V157
GPA: 3.4
WE: Engineering (Manufacturing)
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Re: How many integers from 101 to 800, inclusive, remains the  [#permalink]

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New post 03 Sep 2017, 01:16
The number will not change when their digits are reversed when the first and the last digit are same and we middle digit can be any number
So there are 7 choice for the first digit and last digit and 10 choices for middle digit
Therefore total number are =7*10=70
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Re: How many integers from 101 to 800, inclusive, remains the &nbs [#permalink] 03 Sep 2017, 01:16

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