Find out the wrong term from the given series.
$10, 26, 74, 218, 654, 1946, 5834$

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

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

'$= N$' is to '$T 1$' and '$B 3$' is to '$G 4$' in the same way as '$EB$' is to

Find out the missing term for the given series from the given alternatives.
$P 3 C, R 5 F, T 8 I, V 12 L, ?$

The following questions are based on the five three-digit numbers given below:
$972, 526, 487, 359, 251$
If $1$ is subtracted from the last digit of each of the above numbers,the sum of the digits of how many of them are prime numbers?

Choose the correct alternative for the missing term:
$2 A 11, 4 D 13, 12 G 17, ?$

Find out the wrong term from the given series: $3, 4, 10, 32, 136, 685, 4116$.