What is the place value of 3 in 3678921410. 1. 3

31      40      51      64      79       ?

600     60      12      ?      1.44       0.72

If series II follows the same sequence pattern as series I shown below, determine the value of 'p'.

Series I: 3, 4, 9, 34, 159, 784

What value should come in the place of (?) in the following number series?

192, 96, 96, 144, ?, 720

7      8       ?       13       17        22      28

18, 54, ? , 1890, 17010, 187110

63 131 267 ? 1083 2171

7, 176, ?, 378, 427, 452

138, 140, 152, 174, ?,  248