Question

The intelligence wing of a country develops a new coding machine to code their military messages better. The machine codes the letter "R" into "X" and the letter "P" into "W". If so, what would it code "N" into?

• A. S
• B. T
• C. V
• D. U

Answer 1

The correct option is C V

Assigning numbers to the letters in the English alphabet, we get:

A	B	C	D	E	F	G	H	I	J	K	L	M
01	02	03	04	05	06	07	08	09	10	11	12	13

N	O	P	Q	R	S	T	U	V	W	X	Y	Z
14	15	16	17	18	19	20	21	22	23	24	25	26

Now, multiplying the ones digit to the tens digit of each number, we get:

A	B	C	D	E	F	G	H	I	J	K	L	M
0	0	0	0	0	0	0	0	0	0	1	2	3

N	O	P	Q	R	S	T	U	V	W	X	Y	Z
4	5	6	7	8	9	0	2	4	6	8	10	12

Upon looking for letters with the same numbers, we get:

$R=X=8P=W=6$

Similarly, for the letter N, we get:

$N=V=4$

Hence, the machine will code "N" into "V".