# Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?Correct answers:

**60**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #riddles

Correct answers: **60**

The first user who solved this task is **Nasrin 24 T**.

#brainteasers #math #riddles

## Peter ApianDied 21 Apr 1552 at age 57 (born 16 Apr 1495).German astronomer and geographer, also known as Petrus Apianus, whose major work was Instrumentum sinuum sivi primi mobilis (1534), in which he gave tables of his calculations of sines for every minute, with a decimal division of the radius. |

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