Divisible By A Natural Number
Number Theory
Level
2
All Two digit Numbers from 19 to 80 inclusive are written down one after the other as a single Number . Then is divisible by?
1981
1977
1980
1982
1979
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1 solution
Well...Here use little bit of divisibilty tricks...!! So 1920..........7980 is ending with 80 and it is divisible by 4 ,Hence 1920....7980 is divisible by 4 and 8 Now the option which is divisible by 4 and 8 is 1980...thats the answer