Which festival is celebrated on the day of the closing

In the given arrangement, how many numbers are between the second symbol from the right end and the third symbol from the left end?

Study the following series carefully and answer the questions based on it.

9 N 5 P 7 Q 7 E 8 G 9 W I 6 A 2 X 4 V 3 O 7 I 8 C

F J M P O W R N B E Y C K A V L D G X U H Q I S Z T

.  In the following question, find which one word cannot be made from the letters of the given word “CORRESPONDENCE” 

Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series

What is the sum of all the even numbers in the given series?

Select the letter cluster from among the given option that can replace the question mark (?) in the following series.

CBM, FGT, ILA, LQH, ?

Select the number combination of letters that when placed sequentially in the blanks of the given series will complete the series.

Find the missing alphabets in the following series:

b_ _ ccab_ ca_ _ aa