Select the missing number from the given options?

In a certain code language, "FIRST" is written as "@#$!?" and "EYE" is written as "^*^". How is "TYRE" written in that code language?

Arrange the given words in the sequence in which they occur in the dictionary.

i. Agent
ii. Argentine
iii.Assiduous
iv.Accentuate

Rajan and Manu went to a market. Rajan bought 3 erasers and 5 pens for Rs 105 and Manu bought 4 erasers and 6 pens for Rs 130. What is the price of one eraser?

In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement:

(I) In the GST Model in India, it would be dual tax (GST) with the center and states simultaneously levying tax on a common base tax.
(II) The central and state GST would be levied on every transaction of supply of goods and services simultaneously.

Conclusions:
(I) This new tax regime would benefit common man of country.
(II) There would be more clarity on state and central component.

Following the same logic, crack this mathematical puzzle ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

76, 38, 19, 9.5, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

OP, ST, XY, DE, ?