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Answer» Rule of 2: Any no is divisible by 2 if the last digit is 0,2,4,6,8 hence 25176630 is divisible by 2 and1251 is not divisible
Rule of 3: If sum of all digits of a no is divisible by 3 then the whole no is divisible by 3 hence 2+5+1+7+6+6+3+0=30 ; 30 is divisible by 3 so 25176630 it is divisible 1+2+5+1 =9 ;9 is divisible hence 1251 is divisible
Rule of 5: If any no ENDS with 0 or 5 then it is divisible by 5 therefore 1ST no is divisible and 1251 is not divisible by 5
Rule of 10 : Any no ends with 0 then it is divisible by 10 hence 25176630 is divisible and 1251 is not divisible
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