How many words can we derived out of it?

[new2grammar]

How many words can we make from alphabets A. B, A, B

Kindly help me..

[tedtmc]

A B A B

A
AA
BA
AB
ABA
BAA
BAB
BABA

I can get 8.

[BobK]

How many words can we make from alphabets A. B, A, B

Kindly help me..

I can't pretend to get the point of tedmc's answer, but it looks right.

Incidentally, you made a mistake that may have resulted from an education in programming languages. "ABC... 123..." are "alpha-numerical characters", sometimes (informally) abbreviated to 'alphas', but "A" is not an alphabet; it's a letter.

b