1.

underset("n-digit")ubrace((666…6)) + underset("n-digit")ubrace((888…8)) is equal to :

Answer»

A)`(14(n^2 - 1))`
B)`(48)/(9) (10^(2N) -1)`
C)`(14)/(9) (10^n -1)`
D)none of these

Answer :C


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