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How many Two digit number divisible by 6

Answer» By A.P. 12,18,24,........96a=12. d=6. l=96l= a+(n-1)d96= 12+(n-1)696-12=(n-1)684=(n-1)684/6=(n-1)14=(n-1)14+1=n15=n
6 is multiple of 2 and 3 thus it has two combination to test i.e.,test for 2 and test for 3 hence total number of two digits number divisible by 6=15
15


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