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UPPSC Prelims 2020CSATQ. 88 of 221
Q. 881 markMedium
UPPSC Prelims 2020·CSAT
The missing number (?) in the following series: 60, 180, 90, 270, ?, 405 is
(a)675
(b)540
(c)360
(d)135
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The missing number (?) in the following series: 60, 180, 90, 270, ?, 405 is