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Difficulty: 1/102022 NMTC 2022 (QII-45)

The sum of first five prime numbers is ________.

Guide / Hint

Hint 1: List the first five prime numbers starting from 2.

Hint 2: Exclude 1 as it is not a prime number.

Hint 3: Add the numbers together.

Solution

Step 1 (Identify Primes): We list the first five prime numbers in increasing order:

(Note: 1 is not a prime number, and 2 is the smallest prime).

Step 2 (Sum the Primes):

Step 3 (Conclusion): The sum of the first five prime numbers is exactly 28.

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    2022 NMTC 2022 QII-45 - Olympiad Math Olympiad Question | Leminno