A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
K6V, M12U, O18T,?

In the following series find the missing numbers.
21, 26, 33, 42, 53,?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_qr_srq_p_rs_r_p

Find the next term in the given series.
 1200, 600, 300,  ?

In the following question, select the missing number from the given series.
1, 7, 3, 9, 6, 12, 10, 16, 15, ?

Direction: In the following question, select the missing number from the given series.
7, 10, 14, 19, 25, ?

Find the next number of this series
10, 16, 25, 37, ?

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.
2460, 3570, 4680, ?