Solution:
3-15-18-1-12 correspond to C-O-R-A-L. Other words don’t match the given numbers.
If A=1, B=2, C=3, D=4, E=5, L=12, , M=13, N=14, O=15, R=18,
What is the word formed by 3-15-18-1-12
3-15-18-1-12 correspond to C-O-R-A-L. Other words don’t match the given numbers.