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Mathematics

Grade5

Easy

Question

Find the smallest whole number that is divisible by 10 and 12.

40
30
72
60

hint Hint:

In this question we have to find the lowest number which is divisible by both $10$ and $12$ .The lowest whole number that is divisible by both the numbers will be the LCM of $10$ and $12$ .

The correct answer is: 60

Step1: We are given numbers $10$ and $12$ .
And we have to find the LCM of $10$ and $12$ .
Step2: We know that Multiples of $10$ are: $10 comma 20 comma 30 comma 40 comma 50 comma 60 comma 70 comma space...$
And the multiples of $12$ are: $12 comma 24 comma 36 comma 48 comma 60 comma 72 comma space...$
Step3: Now we have to find the LCM of 12, 24, 36, 48, 60, 72, ...
From the above multiples of $10$ and $12$ it can be easily seen that the least common multiple of is $60$
Hence the least common whole number which is divisible by both $10$ and $12$ is $60$ .

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