Question

(1) 30
Choose the right option.
(1) The HCF of 120 and 150 is ...5.0.........
(2) 45 (3) 20 (4) 120
(ii) The HCF of this pair of numbers is not 1.
(1) 13, 17 (2) 29, 20 (3) 40, 20 (4) 14, 15
Find the HCF and LCM.
(1) 14, 28 (ii) 32, 16 (iii) 17, 102, 170 (iv) 23,69​

Answer 1

Answer:

1) 30

2) 40,20

3) 14=2*7

28=2*14

=2*2*7

There for HCF of 14 and 28 is 2*7 =14

LCM of 14 and 28 2*2*7=28