What is the shortcut key Ctrl + C used for in

What is the sum of all the numbers, which are either immediately preceded or immediately succeeded by a vowel in the given arrangement?

Study the following information carefully and answer the given questions.

FORTRAN programming language is more suitable for

Study the letter series and answer the question that follows.

K I O X J E T R U L E B A C K J M N

In the given series, how many odd numbers are immediately preceded and immediately succeeded by an alphabet?

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

Arrange the words in the alphabetical order and pick the one that come in the end.

Complete the alphabetical series choosing the most appropriate option given below.

U, O, ?, E, A