Question

1. which Of the following is pair of Coprimes ?
(a) (21,27)
(b) (14,64)
(c) (12,25)
(d) (41,123)

2. If HCF (570, 1425) = 285, then LCM (570, 1425) is
(a) 570
(b) 4275
(c) 1425
(d) 2850

3. Which of the following rational numbers have terminating decimal?

(i) 14/625 (ii) 17/270 (iii) 2/35
(iv) 7/400

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (i) and (iv)

PLEASE YAR SHI ANSWER DO CLASS ME HU​

Answer 1

Answer:

1.  Coprimes are the numbers with their HCF = 1

(c) 12,25

2.

A = 570

B = 1425

HCF =285

LCM = ?

LCM = AxB/HCF

=> 2850

(d) 2850

3. Because there denominators are in the form 2^n x 5^m

(d) (i) and (iv)