Determine if 25110 is divisible by 45 with out division
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since 45=9×5 we have to determine if 25110 is divisible with 5 and 9
as we know divisibility criteria for 5 is the no. should have 5 or 0 in one's place 25110 is divisible by 5. - eq i
as we know divisibility criteria for 9 is the sum of all digits should be divisible by 9 therefore
2+5+1+1+0=9
since the sum is divisible by 9 the no. is divisible by 9. -eq ii
From eq i and ii
25110 is divisible by 45
as we know divisibility criteria for 5 is the no. should have 5 or 0 in one's place 25110 is divisible by 5. - eq i
as we know divisibility criteria for 9 is the sum of all digits should be divisible by 9 therefore
2+5+1+1+0=9
since the sum is divisible by 9 the no. is divisible by 9. -eq ii
From eq i and ii
25110 is divisible by 45
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