Which number comes next in the series?

$0,1,3,6,10,15 ?$

Which number comes next in the series?

$36,34,30,28,24 ?$

Which number comes next in the series?

$22,21,23,22,24,23,..... ?$

Which number comes next in the series?

$53, 53, 40, 40, 27, 27,..... ?$

Which number comes next in the series?

$8,22,8,28,8,?$

Directions : Which number comes next in the series?

31,29,24,22,17,?

Select one of the figures from the four choices shown as (a), (b), (c) and (d) which will continue the sequence?

Select one of the figures from the four choices shown as (a), (b), (c) and (d) which will continue the sequence?

Select one of the figures from the four choices shown as (a), (b), (c) and (d) which will continue the sequence?