Question

Can you replace the question mark with the correct letter?
6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Answer 1

Add all and last letter is your answer
eighteen N
twenty one E
.........
Zero O
Thus O is the answer

Answer 2

looks Z
logic
E=5 th in the alphabet 26-5=21 DIVIDE BY TWO DOES NOT GIVE A WHOLE NUMBER DIVIDE BY THREE =7
N=14 26-14=12 DIVIDE BY TWO GIVES 6
R=18 26-18=8 ALREADY A SINGLE DIGIT NO DIVISION REQUIRED SO 8 IS OK
Z=26 26-26=0 ALREADY A SINGLE DIGIT NO DIVISION REQUIRED SO 0 IS OK

Answer 3

6+6+6=18 =N
7+7+7= 21= E
8+8+8= 24= R
9+9+9= 27= ?
0+0+0= 27 +3 - 30
Afphabet 26 +4 = 30 =D
The Answer = NERD