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Difficulty: 2/102024 NMTC 2024 (Q14)

What is the sum of the first nine prime numbers?

Options:

  • 100

  • B.

    98

  • C.

    80

  • D.

    77

Guide / Hint

Hint 1: List the first nine prime numbers in order, starting with 2.

Hint 2: Make sure to exclude 1 (which is not prime) and include 2 (the only even prime).

Hint 3: Add the numbers: .

Solution

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

Step 2 (Summation): Sum these prime numbers systematically:

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

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