Coding and Decoding Questions

If 9@3=12; 15@4=22; 16@14=4; then what is the value of 6@2=?

If in a certain code language, "STUBBORN" is written as "TUVCANQM". How is"TRAINING" written in that code language?

If a = x, b = / and c = +, find the value of 7a5c1b6

If I=9 and SLIP=56, then FALL= ?

If 9x3=3; 15x3=5; 60x5=12; then what is the value of 27x3 = ?

In a certain code language, “LUNGS” is written as “OWQIV”. How is “HEART” written in that code language?

In a certain code language, “TRAVEL” is written as “WVFYIQ”. How is “TABLET” written in that code language?

If 12 (20) 16 and 21 (35) 28, then what is value of A in 48 (80) A ?