Choose the correct alternative for the missing term.
$C4X, F9U, I16R, ?$

Fill in the blank space for the given series with the correct alternative.
$563, 647, 479, 815, (...)$

Find out the wrong term from the given series:
$56, 72, 90, 110, 132, 150$

The following question is based on the five three-digit numbers given below:
$519, 368, 437, 246, 175$
Which of the following is the third digit of the second highest number?

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

Choose the correct alternative for the missing term in the series: $shg, rif, qie, pkd, ?$