The Question is from neet-botany biomolecules-biology amino-acids, and it was created by the author NISHANTH

Question

Which of the following statements is wrong?

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
	**Primary Concept**: Prime Numbers
	**Related Topics**: Divisibility, Composite Numbers
	**Prerequisites**: Understanding of prime and composite numbers.
## SOLUTION PATHWAY
**Given Information**:
	Four statements about prime numbers.
**Method & Steps**:
	1. **Analyze each statement based on the definition of a prime number.**
		Reasoning: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
	2. **Identify the incorrect statement.**
		Working: Evaluate the truth of each option.
		Key Point: Focus on counterexamples to disprove statements.
	3. **Select the wrong statement.**
		Result: 'All odd numbers are prime' is false.
		Verification: 9 is an odd number but is divisible by 3, hence not prime.
## OPTION ANALYSIS
[A] ✓: Prime numbers are only divisible by 1 and themselves. This is the definition of a prime number.
[B] :x: All odd numbers are prime. This is false. For example, 9, 15, 21 are odd numbers but not prime as they have divisors other than 1 and themselves.  9 is divisible by 3, 15 by 3 and 5, 21 by 3 and 7. 
[C] :x: 1 is a prime number. This is false.  1 is not considered a prime number by definition.
[D] :x: 2 is the only even prime number. This is true. All other even numbers are divisible by 2, in addition to 1 and themselves, so they are not prime.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing prime with odd: Not all odd numbers are prime (e.g., 9, 15, 21).
			How to avoid: Remember the definition of a prime number and look for divisors other than 1 and the number itself.
		2. Incorrectly classifying 1:  Thinking 1 is prime.
			How to avoid: Memorize that 1 is not a prime number by definition.
	**Quick Tips**:
		1. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19...
		2.  2 is the only even prime number.

NISHANTH · Answer

Prime numbers are only divisible by 1 and themselves

NISHANTH · Answer

The correct Option is "All odd numbers are prime"

NISHANTH · Answer

1 is a prime number

NISHANTH · Answer

2 is the only even prime number

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