If all the alphabets of the series are written in reverse order, then which of the following will be 8th to the right of the 7th from the left end of the series?
Series :: C E B A C D B C D A C E B E D C A B A D A C E D U B A U B D B U

The Given Series of alphabets
C E B A C D B C D A C E B E D C A B A D A C E D U B A U B D B U
After arranging the given series of alphabets in reverse order
U B D B U A B U D E C A D A B A C D E B E C A D C B D C A B E C
Method 1 to solve the question.
Now 7th position from left side
U B D B U A B U D E C A D A B A C D E B E C A D C B D C A B E C
Now 8th to the right of the alphabet B
U B D B U A B U D E C A D A B A C D E B E C A D C B D C A B E C

Method 2 to solve the question
Now, 8th to the right of the 7th from the left end = (8 + 7)th
i.e., 15th from the left end = B
U B D B U A B U D E C A D A B A C D E B E C A D C B D C A B E C