Question

If BRIGHTEN is written as HJSCMDSG. How is COMPLETE written in that code ? A) DSDKQNPD B) QNPDDSDK 78. C) QNPDFUFM D) OLNBFUFM

Answer 1

This is a really tricky question. Let me clear it out to you. 

BRIGHTEN is coded as HJSCMDSG.

For a simpler understanding of the logic behind it, divide the words into two parts.
[BRIG] → [HJSC]
[HTEN] → [MDSG]

Now, let's name the sets. [BRIG] can be A, [HJSC] can be A1, [HTEN] can be B, and [MDSG] can be B1.

Now reverse the letters of sets A and B.
They will become A[GRIB] and B[NETH]

If you observe, the first letter of set A1 is corresponding to the first letter in A, and the first letter in B is corresponding to the letter in B1.

Set A- 1st letter G
Set A1- H

Set B1- M
Set B- N

The same goes for the second, third, and fourth letters. 

Using the same logic, we can code COMPLETE.

A[COMP] and B[LETE]

Now reverse the alphabets.

A[PMOC] and B[ETEL] 

Now write the corresponding letters for set A.

[PMOC] → [QNPD]
 
And now we write the preceding letters of B.

[ETEL] → [DSDK]

And now, combine both the answer sets, i.e. , [QNPD] + [DSDK], which makes QNPDDSDK, which is the option (b). 

I hope this helped you : )