Study the given digit-letter-symbol sequence carefully

Select the option that is related to the third term in the same way as the second term is related to first term.

SURPRISE: IRHVHFIK:: HESITATE: ?

Select the combination of letter that when sequentially placed in the blanks of the given series will complete the series.

A _ B C _ _ D B _ E _ D _ C __

Which of the following element is 21th from right end of the series?

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.

L_UA_Z_N_AP_L_U_PZ

In the given arrangement, how many prime numbers are between 11 th element from the left end and 6 th element from the right end?

If 22 @ 18 = 18' and '42 @ 22 = 15', then 18 @ 23 = ?'. What will come in place of question mark? 

A ______________ is an element of hardware for centralizing network traffic coming from multiple hosts and to propagate the signal.

Select the letter cluster from among the given option that can replace the question mark (?) in the following series.

CBM, FGT, ILA, LQH, ?

Study the arrangement of number and letter carefully and answer the following questions.

How many such numbers are there which is preceded by alphabets and followed by symbols?