Question

Q-1 Answer the questions. 1. Which is the even prime number? 2. Which is the smallest odd composite number? 3. Write prime number between 45 and 50. 4. Write prime factors of 15. 5. Write all the factors of 12.​

Answer 1

Question 1) : Which is the even prime number ?

Answer: 2 is the even prime number.

2 is the only even prime number. because, All even number is divisible by 2. That's why, All other even number have More than two factors 1, 2 and Itself (So, It became a composite number).

Therefore,

2 is the even prime number.

Question 2) : Which is the smallest odd composite number ?

Answer: 9 is the smallest odd composite number.

1 is the smallest odd number but, It is nor a prime number neither a composite number.

Then,

3 is the smallest odd number but, It is a prime number.

Then,

5 is the smallest odd number but, It is a prime number.

Then,

7 is the smallest odd number but, It is a prime number.

Then,

9 is the smallest odd number. And It is also a Composite number.

Therefore,

9 is the smallest odd composite number.

Question 3) : Write prime number between 45 and 50.

Answer: 47 is the prime number between 45 and 50.

46 is a composite number.

47 is a prime number.

48 is a composite number.

49 is a prime number.

Therefore,

47 is the prime number between 45 and 50.

Question 4) : Write prime factors of 15.

Answer: Prime factor of 15 = 3¹ × 5¹

Question 5) : Write all the factors of 12.

Answer: Factors of 12 = 1, 2, 3, 4, 6, 12

Answer 2

Question

$\\\text \red { 1. Which is the even prime number? }$

$\green {\text{ Ans. 2 is the even prime number. } }$

$\\\\\text \red { 2. Which is the smallest odd composite number ? }$

$\green {\text{ Ans. 9 is the smallest odd composite number } }$

$\\\\\text \red { 3. Write prime number between 45 and 50. }$

$\green {\text{ Ans. 47 is the prime number between 45 and 50. } }$

$\\\\\text \red { 4. Write prime factors of 15. }$

$\green {\text{ Ans. 1 , 3 and 5 are the factors of 15. } }$

$\\\\\text \red { 5. Write all the factors of 12. }$

$\green {\text{ Ans. 1 , 2 , 3 , 4 , 6 and 12 are all factors of 12. }}$