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tmua.me Medium Set E Paper 1 · Q18

Paper 1StatisticsNumber & counting

A three-digit positive integer NN has digits whose sum is 1212. Its tens digit is the arithmetic mean of its hundreds digit and its units digit.

Reversing the order of its digits gives a number that is 198198 less than NN.

What is the hundreds digit of NN?

A33
B44
C55
D66
E88

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