(A) Ibn Battuta
(B) Omar Khayyam
(C) Ibn Sina
(D) None of these
🧠 Explanation:
- The binomial theorem gives a formula to expand expressions like (a + b)n.
- Omar Khayyam, a Persian mathematician, was among the first to explore binomial expansions for positive integers.
- His work laid the groundwork for later formalization by European mathematicians like Pascal and Newton.
- He contributed significantly to algebra and is credited with early use of the binomial theorem.