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Sum of all the prime numbers between 70 and 100 is : 

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HTET TGT Mathematics 2017 Official Paper
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  1. 492 
  2. 385 
  3. 421 
  4. 419

Answer (Detailed Solution Below)

Option 1 : 492 
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HTET PGT Official Computer Science Paper - 2019
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Detailed Solution

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Concept:

Prime numbers: Any natural number greater than 1 divisible only by itself and 1.

Calculation:

Prime numbers are = 71, 73, 79, 83, 89, 97

⇒ Sum = 71 + 73 + 79 + 83 + 89 + 97 = 492

∴ The sum of all the prime numbers between 70 and 100 is 492.

The correct option is 1 i.e. 492

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