ATQ, 16 X (3/2) = 24 24 X (5/2) = 60 60 X (7/2) = 210 210 X (9/2) = 945 945 X (11/2) = 5197.5
13, 26, 104, ?, 13312, 425984
6 55 91 116 132 ? .
D irection: Which of the following will replace ‘?’ in the following series
9, ‘?’, 1242, 1581, 1783
...52 26 39 97.5 ?
...5, 11, 19, 29, 41, ?
4, 8, 24, ?, 840, 9240
620 632 608 644 596 ?
...210 211 207 223 159 ?
...130 114 106 102 100 ?
7 14 42 168 840 ?
...