How many 8?
Algebra
Level
3
How many digit 8 will be in the result if we multiply 999999999 with 123456789?
The answer is 3.
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1 solution
See,999999999=1000000000-1.If we multiply 123456789 with (1000000000-1) the we will get 123456789000000000-123456789.,Now the sub this two numbers and you will get the answer.