Question

(5) Which of the following are the pairs of coprimes ?
(i) 6, 7 (ii) 9, 12 (iii) 34, 51 (iv) 31, 33.​

Answer 1

Answer:

34 51 or 31 33

Step-by-step explanation:

yes i think 31 33 this is the correct pair

Answer 2

Answer:

(5) Which of the following are the pairs of co-primes ?

(i) 6, 7 (ii) 9, 12 (iii) 34, 51 (iv) 31, 33.​

Step-by-step explanation:

• Co- prime numbers can be defined as twin prime numbers.
• Also HCF of co prime numbers is always 1.
• Two numbers whose common factor is 1 are called as co-primes numbers.
• For example- 1,2,3; 3,4; 4,5; 6,7 are some pairs of co primes.
• There is some difference between prime and co prime number  prime numbers are number who have one factor and itself while co prime number are pairs of two numbers who have common factor as 1.
• So according to the option given: (i) 6, 7 (ii) 9, 12 (iii) 34, 51 (iv) 31, 33. option 2, 3, 4 are not correct for co- prime.
• Option 1 which is 6,7 is correct for co prime number.

Hence, option 1. 6,7 is correct answer.