Question: why is roman numeral 50 l?
Answer: Larger Roman numerals developed from other symbols. M = 1,000 — Originally, the Greek letter phi — Φ — represented this value. ... L = 50 — This value was originally represented by a superimposed V and I, or by the letter psi — Ψ — which flattened out to look like an inverted T, and then eventually came to resemble an L.