What is the English name for the number 63?

• A. Sixty-one
• B. Sixty-two
• C. Sixty-three
• D. Sixty-four

Answer: (C)

Naming numbers in the sixties uses a tens word followed by the unit, with a hyphen connecting them. For sixty-something numbers, you start with “sixty” and add the unit part. Since the units digit is 3, you say “sixty-three.” The other options would be “sixty-one,” “sixty-two,” and “sixty-four,” which name 61, 62, and 64 respectively.