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galibhaskar
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number of numbers of the form 30a0b03 where a,b are digts which are divisible by 13 is
 one year ago
 one year ago
galibhaskar Group Title
number of numbers of the form 30a0b03 where a,b are digts which are divisible by 13 is
 one year ago
 one year ago

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rajat97 Group TitleBest ResponseYou've already chosen the best response.0
can you please explain this question , as a and b cannot be digits as any single digit is not divisible by 13 and if they are
 10 months ago

LastDayWork Group TitleBest ResponseYou've already chosen the best response.0
For divisibility by 13 refer: http://en.wikipedia.org/wiki/Divisibility_rule#Divisibility_by_13 ∴ set of (a,b) such that 30a0b03 is divisible by 13 ={ (a,b) : 6+3a4b=13n ; n∈N∪{0} } where a,b are digits You can do trial and error from here.
 9 months ago
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