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Que. Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next?Look at this series: 58, 52, 46, 40, 34, ... What number should come next?Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?
a. 14267
b. 152810
c. 213014
d. 233215
Correct Answer:152815
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