Which of the following options represents sub-atomic

Find the missing term in the following question:

Find the missing letter.

Find the missing term?

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

Study the given matric carefully and select the number from among the given options that can replace the question mark (?) in it.

Study the given pattern carefully and select the number that can replace the question mark [?] in it.

Study the given pattern carefully and select the number that can replace the question mark [?] in it?

What will come in the place of question mark?

Find the missing term :

Find the missing number from the given responses.

3       5       7

4       6       8

5       7       9