How many times does the letter 'A' appear in the series: A, B, A, C, A, D, E?

B. 3

If the code for 'CAT' is 3120, what is the code for 'DOG' if the letters are assigned values based on their position in the alphabet?

A. 4157

What is the next letter in the series: A, C, E, G, ?

A. I

Choose the odd letter group: PQRS, TUVW, XYZA, BCDE, FGHI

C. XYZA

If the input sequence is '1 2 3 4 5', what will be the output after two rearrangement steps where the last number is moved to the front?

A. 5 1 2 3 4