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4, 44, 444, …, 44444…4⏟N number of 4’s 4, \; 44, \; 444, \; \ldots , \; \underbrace{44444\ldots4}_{N \text{ number of 4's}} 4,44,444,…,N number of 4’s44444…4
If average of the numbers above is equal to 9876, find NNN.
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