The sequence of primes rounded to the nearest ten begins 0, 0, 10, 10, 10, 10, 20, 20. How many terms are equal to 40?
A. 1 B. 2 C. 3 D. 4 E. 5
C
Primes between 35 and 44 (37, 41, 43) round to 40, giving three terms of 40.
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