Coding and Decoding Questions

In a certain code language, "DISORDER" is written as "OSIDREDR". How is "PRACTICE" written in that code language?

Some equations are solved on the basis of certain system. Find out the correct answer for unsolved equation on that basis: 4 x 5 x 8 = 584, 7 x 3 x 9 = 397, 9 x 7 x 3 = ?

If 19 + 2 x 2 + 3 = 369 and 23 + 2 x 6 + 2 = 565, then 7 + 3 x 11 + 3 = ?

If ENTRY is coded as 98462 and STEADY is coded as 749312, then how is NEATNESS written in that code?

In a certain code language, "DELETE" is written as "#@^@%@" and "GRAM" is written as "!?*&". How is"TELEGRAM" written in that code language?

In a certain code language, "WILDHORN" is written as "1133" and "RAPTURE" is written as "1089". How is "PORTLOUIS" written in that code language?

In a certain code, 'TEACHER' is written as VGCEJGT. How is 'CHILDREN' written in that code?

In a certain code GIVE is written as VIEG and OVER is written as EVRO. How will DISK be written in that code?