" (i) "28" from "-42

Find the HCF and LCM of the following by prime factorisation method : (i) 12 and 15 (ii) 20 and 25 (iii) 28 and 42

Subtract : 38^(@) 42' from 74^(@)17'

How much less is 28.8 km than 42.3 km?

How much less is 28 km than 42.6 km?

How much less is 28 km than 42.6 km?

Express 2/(-7) as a rational number with denominator (i) 42 (ii) -28

Find L.C.M. of (i) 28, 42 " " (ii) 36, 40, 126.

Subtract 28.65 from 73.

What is the ratio of LCM and HCF in the ratio of 28 and 42?