Question

a) Write a set of prime number from 1 to 25. b) If B={} then n(B) = ? ​

Answer 1

Answer:

n b(9)

Step-by-step explanation:

b(9) ahe answer yache

Answer 2

Answer:

If B={2,3,5,7,11,13,17,19,23} then n(B)=9

Step-by-step explanation:

• A prime number is a natural number grater than 1 that is not a product of two smaller natural numbers.
• A natural number greater than 1 that is not prime is called a composite number.
• Prime numbers from 1 to 25 are, 2,3,5,7,11,13,17,19,23.
• The set of prime numbers from 1 to 25.
• B={2,3,5,7,11,13,17,19,23}
• There are in total 9 prime numbers in between 1 to 25 which are in set B.
• Hence the number count is 9
• Therefore n(B)=9

Hence, if B={2,3,5,7,11,13,17,19,23} then n(B)=9