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The sum of the prime numbers less than 8 is equal to 17.
Find the sum of the prime numbers less than 21.
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Answer:
The sum of prime numbers less than 21 is 77.
Step-by-step explanation:
Prime numbers are numbers which have no factors other than 1 and itself, for example 2,3,5...
Sum of prime numbers below 8=2+3+5+7=17 as given in the question.
We have been asked to find the sum of prime numbers below 21 which can be found by adding the prime numbers from 8 to 21 and adding 17 to them,
sum of prime numbers less than 21=17+11+13+17+19=77
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