Purmu n combi Help!

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SHEETAL KOUL's picture
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A security agency assigns a two-digit code with distinct digits to each of its members using the digits 0,1,2,....,9 such that the first digit of the code is not zero.However the code printed on the badage can potentially creat confusion when read upside down.For example,the code 18 may appear as 81.How many codes are there for which no such confusion can arise?
(1)69
(2)71
(3)81
(4)65
(5)75

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Incognito
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ans is 71 Little Star

ans is 71

Little Star

Incognito
Incognito's picture
ans is 71 Little Star

ans is 71

Little Star

jigar_er_civil's picture
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ans is 71 Little Star

ans is 71

Little Star

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SHEETAL KOUL's picture
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yes ans is 71 n hw u solved

yes ans is 71 n hw u solved it??

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SHEETAL KOUL's picture
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yes d ans is 71 n hw u solved

yes d ans is 71 n hw u solved it??

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Instead the stories derive from fifaah

Thomsen writes, "You won?t find a Call of Duty, Final Fantasy, or GoldenEye riff here. Instead the stories derive from Cheap FIFA Mobile Coins games most fans would rather steamroll into oblivion."At the Second Person Shooter blog, Laura Michet talks about the lessons she took away from running an ARG game called ?Humans vs. Zombies?. It comes in two parts.And lastly, at the Up Up Dn Dn blog Jason Killingsworth gazes longingly out the windows of Dead Space 2 in ?

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