What is the sum of all prime numbers between and ?
61
63
60
62
Hint 1: List all prime numbers in the range .
Hint 2: The primes are 11, 13, 17, and 19.
Hint 3: Add these four prime numbers together: .
Step 1: List all integers strictly between and : .
Step 2: Identify the prime numbers from this list:
(prime)
(prime)
(prime)
(prime)
(The numbers 12, 14, 16, 18 are even, 15 is divisible by 3 and 5).
Step 3: Sum the prime numbers:
So the sum of the prime numbers between 10 and 20 is .
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