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Number theory Difficulty 2.0 Junior Find the answer United Kingdom

The sequence, formed from the sequence of primes by rounding each to the nearest ten, begins $0, 0, 10, 10, 10, 10, 20, 20, 20, 30, \ldots$ . When continued, how many terms in this sequence are equal to $40$ ?

(A) $1$ (B) $2$ (C) $3$ (D) $4$ (E) $5$

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