Numeric Type
Question 19
The number 123454321 is written on a blackboard. Evan walks by and erases some (but not all) of the digits, and
notices that the resulting number (when spaces are removed) is divisible by 9. What is the fewest number of digits
he could have erased?
Answers
Answered by
1
Answer:
what's ur question ..Not umderstandable at all
Answered by
2
Answer:
2 digits
Step-by-step explanation:
For divisibility by 9 the sum of all the digits should be divisible by 9.
her, the sum is 25
and to make it divisible by 9 , 7 has to be removed from it to make the sum 18.
and the way in which it has to be done, so that least number of digits are erased can be 5 and 2, or , 4 and 3
So 2 digits are needed to be removed.
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