Find out the missing term for the given series from the given alternatives.
$ABP, CDQ, EFR, (?)$

The positions of how many digits in the number $7,3,5,4,6,1,2$ will remain unchanged after the digits within the number are rearranged in descending order from left to right?

Find out the wrong term from the given series.
$11, 5, 20, 12, 40, 26, 74, 54$

Find out the wrong term from the given series.
$2, 5, 10, 17, 26, 37, 50, 64$

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

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

What should come in place of the question mark $(?)$ in the following series based on the above arrangement?

$QP@,MAH,@YZ,?$

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

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

How many such consonants are there in the above arrangement, each of which is immediately preceded by a consonant and immediately followed by a number?