CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Find the least square number , exactly divisible by each one of the numbers:
(i) 6,9,15 and 20            (ii) 8,12,15 and 20


Solution

(i) 6,9,15,20

LCM of 6,9,15,20= 2\times 3\times 5\times 3\times 2 =180
2×2×3×3×5
We see that afer grouping the factors in pairs 5 is left unpaired 
Least perfect square=180×5=900 

(ii) 8,12,15,20
LCM of 8,12,15,20

= 2×2×2×3×5
We see that after grouping the factors, factors2,3,5 are left unpaired
Perfect square=120×2×3×5
= 120×30=3600


Mathematics
RD Sharma
Standard VIII

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
Same exercise questions
View More


similar_icon
People also searched for
View More



footer-image