Directions : In each of the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it.

- bcdbc - dcabd - bedbc -dc -bd

Find the wrong number in the series.
2, 9,5, 36, 125, 648

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

313, 623, 933, 1234, ?

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

27,32,30,35, 33, ?

Select the correct option that will fill in the blank and complete the series.
LM, QR, VW___

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete It?
_c_bd_ cbcda_a_db_a