from 3 to 41,how many such number which ate divisible by 3and sum of their digit is 9 are
Priyanshu31072002:
Can't understand sum of their digit is 9
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Numb divisible by 3
3,6,9,12,15,18,21,24,27....39
an=39
an=a+(n-1)d
39=3+(n-1)3
36/3=n-1
12+1=n
13=n
So 13 no van be divisible by 3
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