Question
If in the number 67486463, the digits at the odd
position are increased by 1 and, the digits at the even position are decreased by 2 from the left end and then how many digits are repeated more than one time?Solution
6 7 4 8 6 4 6 3 7 5 5 6 7 2 7 1 7 and 5 are repeated more than one time. Thus two digits are are repeated more than one time.
How many digits are required to write first 500 natural numbers?
The number 611611611611611611611 isΒ
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