If FOREST is coded as 669512, then how will WINTER be coded?

The correct answer is Option (3) → 595259

Each letter is written as its place in the alphabet, and a two-digit place is reduced to one digit by adding its digits (again if needed).

• FOREST: F (6) gives 6, O (15) gives \(1+5=6\), R (18) gives \(1+8=9\), E (5) gives 5, S (19) gives \(1+9=10\) and then \(1+0=1\), T (20) gives \(2+0=2\): 669512

• W (23) gives \(2+3=5\)

• I (9) gives 9

• N (14) gives \(1+4=5\)

• T (20) gives \(2+0=2\)

• E (5) gives 5

• R (18) gives \(1+8=9\)

So WINTER is coded as 595259.