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OpenStudy (anonymous):
How many 3-digit positive integers are there in which adjacent digits are not the same? what does it mean when it says "adjacent digits"?
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hartnn (hartnn):
in 334 there is one pair of adjacent digits another ex: 988, 772 ... adjacent means one next to other...
OpenStudy (anonymous):
can you give one more example? i'm not sure if i understand it right
OpenStudy (anonymous):
is it like 32 or 45 or 789 but not 82 or 51 ?
hartnn (hartnn):
|dw:1409981570652:dw| digit 1 and digit 2 are adjacent pair of digits digit 2 and digit 3 are adjacent pair of digits
OpenStudy (anonymous):
oh just beside each other not consecutive.. ?
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hartnn (hartnn):
right, just besides each other in position
OpenStudy (anonymous):
okay thanks!
hartnn (hartnn):
welcome :)
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