Question

3. Which of the following pairs is a pair of co-
primes?
(i) 9,72
(iii) 4,9
(ii) 12, 36
(iv) 5, 20
4. The largest number of four-digits which is
exactly divisible by 3 is :
(ii) 9990
(iii) 9991
(iv) 9999
(i) 9995​

Answer 1

Answer:

The greatest 4 digit number is 9999.