Question
The first and last digit of a 99 digit number is 4 and
the remaining digit is same. What will be the remaining digit so that the number exactly divided by 11?Solution
4 ........................................ 4 Divisibility rule of 11 Take the alternative sum of the digit in the number, read from left to right. If that is divisible by 11, so is the original number. According to question, 4 8 4 4 8 8 8 4 is divisible by 11 = 8
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