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How many prime numbers are there between 21 and 30?
- a)1
- b)2
- c)3
- d)4
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct...
The prime numbers between 21 and 30 are 23 and 29.
Community Answer
How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct...
Understanding Prime Numbers
Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. In simpler terms, a prime number can only be divided evenly by 1 and itself.
Identifying Prime Numbers Between 21 and 30
Let's explore the numbers between 21 and 30 to find the prime numbers:
- 21: Divisible by 1, 3, 7, and 21 (not prime).
- 22: Divisible by 1, 2, 11, and 22 (not prime).
- 23: Divisible only by 1 and 23 (prime).
- 24: Divisible by 1, 2, 3, 4, 6, 8, 12, and 24 (not prime).
- 25: Divisible by 1, 5, and 25 (not prime).
- 26: Divisible by 1, 2, 13, and 26 (not prime).
- 27: Divisible by 1, 3, 9, and 27 (not prime).
- 28: Divisible by 1, 2, 4, 7, 14, and 28 (not prime).
- 29: Divisible only by 1 and 29 (prime).
- 30: Divisible by 1, 2, 3, 5, 6, 10, 15, and 30 (not prime).
List of Prime Numbers Found
From this analysis, we find two prime numbers between 21 and 30:
- 23
- 29
Conclusion
Therefore, the number of prime numbers between 21 and 30 is 2, which corresponds to option 'B'.
If you have any additional questions or need further clarification, feel free to ask!
Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. In simpler terms, a prime number can only be divided evenly by 1 and itself.
Identifying Prime Numbers Between 21 and 30
Let's explore the numbers between 21 and 30 to find the prime numbers:
- 21: Divisible by 1, 3, 7, and 21 (not prime).
- 22: Divisible by 1, 2, 11, and 22 (not prime).
- 23: Divisible only by 1 and 23 (prime).
- 24: Divisible by 1, 2, 3, 4, 6, 8, 12, and 24 (not prime).
- 25: Divisible by 1, 5, and 25 (not prime).
- 26: Divisible by 1, 2, 13, and 26 (not prime).
- 27: Divisible by 1, 3, 9, and 27 (not prime).
- 28: Divisible by 1, 2, 4, 7, 14, and 28 (not prime).
- 29: Divisible only by 1 and 29 (prime).
- 30: Divisible by 1, 2, 3, 5, 6, 10, 15, and 30 (not prime).
List of Prime Numbers Found
From this analysis, we find two prime numbers between 21 and 30:
- 23
- 29
Conclusion
Therefore, the number of prime numbers between 21 and 30 is 2, which corresponds to option 'B'.
If you have any additional questions or need further clarification, feel free to ask!
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How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer? for Class 6 2025 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer?.
How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer? for Class 6 2025 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many prime numbers are there between 21 and 30?a)1b)2c)3d)4Correct answer is option 'B'. Can you explain this answer?.
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