Question

(iv) 161, 192
1. Which of the following pairs of numbers are co-primes ?
(1) 12,30
(ii) 8,21
(iii) 54, 144
(Hint: Two numbers are co-primes if their H.C.F. is 1.)
2. Using division method, find H.C.F. of:
(1) 398, 436, 542
(ii) 150, 140, 210
(iii) 2057, 3267
(iv) 1440, 1800, 1920
(v) 276, 1242​

Answer 1

Answer:

1. Which of the following pairs of numbers are co-primes ?

(i) 12, 30

(ii) 8, 21

(iii) 54, 144

(Hint: Two numbers are co-primes if their H.C.F. is 1.)