What will be the next term in $BKS, DJT, FIU, HHV, (\ldots)$?

Choose the correct alternative to complete the series: $....op....mo.....n....\,...pnmop.....$

Study of the following arrangement carefully and answer the questions given below.

$Q,E ,* ,P,M ,8 ,R,A ,@ ,C ,9 ,U,H,W, \# ,J,Z, ,S, \beta, Y,N ,5 ,\$ ,G,I,T$

If the first element in the above arrangement exchanges its position with the element in the $26 th$ position and the second with the one in the $25 th$ position and so on, which of the following will be in the tenth position from the left after rearrangement?

What will be the next term in the series: $BDF, CFI, DHL, ?$

Fill in the blank space for the given series with the correct alternative.
$5, 6, 7, 8, 10, 11, 14, (\ldots)$

Find the missing letters for the given series from the given alternatives:
$ab....bbc....c....ab....ab....b$