In a certain code language, ‘COLDER’ is written as ‘105’ and ‘MOUSE’ is written as ‘62’. How will ‘PLIGHT’ be written in that language?

Let's check the positional values of the letters (forward or reverse):For MOUSE:Forward values: $\text{M}=13,\text{O}=15,\text{U}=21,\text{S}=19,\text{E}=5$ Sum $=13+15+21+19+5=73$. (Not 62)Reverse positional values ($\text{A}=26,\dots ,\text{Z}=1$):$\text{M}\to 14$$\text{O}\to 12$$\text{U}\to 6$$\text{S}\to 8$$\text{E}\to 22$$\text{Sum}=14+12+6+8+22=62$.This perfectly matches the code for MOUSE.Let's check COLDER using reverse positional values:$\text{C}\to 24$$\text{O}\to 12$$\text{L}\to 15$$\text{D}\to 23$$\text{E}\to 22$$\text{R}\to 9$$\text{Sum}=24+12+15+23+22+9=105$.This perfectly matches the code for COLDER.Now, applying the same logic to PLIGHT:$\text{P}\to 11$$\text{L}\to 15$$\text{I}\to 18$$\text{G}\to 20$$\text{H}\to 19$$\text{T}\to 7$$\text{Sum}=11+15+18+20+19+7=90$.