KBC 2023| How many bones are there in the thumb? KBC 2023, Check the answer to the question- How many bones are there in the thumb? By Himani Budakoti - October 20, 2023 KBC 2023, The options of the question – How many bones are there in the thumb? A. 1 B. 2 C. 3 D. 4 The answer is B. 2.