IBPS RRB Number Series Questions

Find the number for '?'

1200,      150,    25,     ?, 3.125

16,     17,    36,   111,    448, ?

25,     30, 49, 56, 81, 90, ?, 132

705, 728, 774, 843, 935, 1050,     ? 

2, 4, 16, 86, 610, ?

Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?

Look at this series: 36, 34, 30, 28, 24, ... What number should come next

Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next

Look at this series: 544, 509, 474, 439, ... What number should come next?