Coding and Decoding Questions

If 6 @ 4 @ 7 = 101 and 2 @ 5 @ 11 = 150, then what is the value of A in A @ 8 @ 9 = 289?

In a certain code language, "CUTE" is written as "9251" and "REST" is written as "4135". How is "RESCUE" written in that code language?

If HEROISM is coded as SVILRHN, then how will ALP be coded as?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it? _AB_PQ_AB_P_

In a certain code language, "PEPPER" is written as "@#@@#!" and "AIM" is written as "^?*". How is "PAMPER" written in that code language?

If 5$125 = 25, 12$48 = 4 then what is the value of 4$24 = ?

In a certain code language, "TROUPE" is written as "GILFKV" and "ERUPTION" is written as "VIFKGRLM". How is "GENIUS" written in that code language?

If Q = 10 and FAX = 50, then XEROX = ?