2. Which of the following are pairs of co-primes?
() S. 14
(ii) 17, 19
3. List the prime numbers from 25 to 100 and say
4 Write all the twin prime numbers from 51 to 10
5. Write 5 pairs of twin prime numbers from 1 to
6. Which are the even prime numbers?
Let’s learn. Factorising a Numb
A simple but important rule given by Euclid
and LCM of numbers. The rule says that any o
Answer:
2. i)
ii) 17 and 19 are co- prime numbers
3. The prime numbers from 25 to 100 are 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
4. The twin prime numbers from 51 to 100 59, 61, 71 and 73
Explanation: Co-prime number is a set of numbers or integers which have only 1 as their common factor that is their Highest Common Factor (HCF) will be Co-prime numbers are also known as relatively prime or mutually prime numbers.