Fill in the blank space for the given series with the correct alternative.
$97, 86, 73, 58, 45, (\ldots)$

Choose the correct alternative to complete the series: $....a...b...abaa...bab...abb$

Choose the correct alternative to fill in the blanks in the series: $b . . a b b e . . b b c a . . b c a b b . . a b$

Choose the correct alternative to fill in the blanks in the series: $c . . b b a . . . . c a b . . . . a c . . . . a b . . . . a c$

Study the following arrangement carefully and answer the questions given below:

$7, R,E,T ,4 ,A ,9 ,\% ,D,F, 1, U, \# ,B ,@ ,8 ,H,I ,$©$, W,M, \star, 3,2 ,V ,\$ ,5 ,N,P,6, Q$

Four of the following five are alike in a certain way based on their position in the above arrangement and so form a group.

Which is the one that does not belong to the group?

Fill in the blank space for the given series with the correct alternative.
$4, 32, 128, (\ldots)$