Find the least number of children that can be arranged as 10,20and 40 in each row.
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Given : children to be arranged as 10, 20 and 40 in each row.
To find : least number of children
Solution:
We need to find least number of children that can be arranged as 10, 20 and 40 in each row.
So we need to find LCM of 10 , 20 & 40
10 = 2 * 5
20 = 2 * 2 * 5
40 = 2 * 2 * 2 * 5
LCM = 2 * 2 * 2* 5
= 40
Hence Least number of students = 40 who can be arranged in 10 , 20 o 40 in each row
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