Coding and Decoding · Logical Reasoning and General Mental Ability · UPSC Civil Service

If a+b means a−b ; a−b means a×b ; a×b means a+b; then what is the value of 10+30−100×50+25? (Operations are to be replaced simultaneously)

If in a certain code, 'ABCD' is written as 24 and 'EFGH' is written as 1680, then how is 'IJKL' written in that code?

If in a certain code, 'POT' is written as ATOP and 'TRAP' is written as APART, then how is 'ARENA' written in that code?

If 'ZERO' is written as 'CHUR', then how is 'PLAYER' written?

If the order of the letters in the English alphabet is reversed and each letter represents the letter whose position it occupies, then which one of th...

In the English alphabet, the first 4 letters are written in opposite order; and the next 4 letters are written in opposite order and so on; and at the...

In a certain code language 'MATHEMATICS' is written as 'LBSIDNZUHDR'. How is 'CHEMISTRY' written in that code language?