Choose the correct alternative for the missing term:
$OTE, PUF, QVG, RWH, ?$

Which one of the following is the correct order of missing letters in the series given below?
$....sttt...tt...tts....$

Two terms have been put within brackets. Mark your answer as:
$4, 7, (9), 10, 13, 15, (16), 19$

Fill in the blank space for the given series with the correct alternative.
$9, 11, 20, 31, (...), 82$

To answer these questions, study the following arrangement of digits, letters and symbols carefully.

$6, N,P ,=,@, 7,1 ,\&, R, T, 3, L, ,B, \star, E ,4,\# ,8, G,H ,\$, 5, K,M ,?, 2, D,C$

If all the digits in the arrangement are deleted, which of the following will be midway between the $3^{rd}$ and the $15^{th}$ elements from the left end?

Fill in the blank space for the given series with the correct alternative.
$0.5, 0.55, 0.65, 0.8, (...)$