Which of the following will come in place of the question mark $(?)$ in the order given below?
$AC, EH, IM, MR, ?$

Find the missing letters for the given series from the given alternatives.
$b....b...bb....,.....bbb.....bb....b$

Choose the correct alternative to complete the series: $aa . . ab . . . . . . aaa . . . a$.

Fill in the blank space for the given series with the correct alternative.
$95, 115.5, 138, (...), 189$ (in $.5$)

The following question is based on the five three-digit numbers given:
$513, 248, 371, 634, 167$
Which of the following represents the sum of all three digits of the lowest number among them?

These questions are based on the following arrangement. Study it carefully and answer the questions.

$J ,\star, R, 3, P,L ,2 ,\# ,I,N, 7, O,C, @ ,K, 5, D, =, M, \$, 6, B, > ,A ,Q ,4$

If the above arrangement is written in reverse order, which element will be eleventh to the left of sixteenth from the left?