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Question

is the largest number that perfectly divides 480 and 270.

A
10
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B
60
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C
15
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D
30
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Solution

The correct option is D 30
The largest number which divides both 480 and 270 perfectly is their HCF.

To find their HCF, we would use the Euclid's division algorithm.

Step 1 : 480=270×1+210
Step 2 : 270=210×1+60
Step 3 : 210=60×3+30
Step 4 : 60=30×2+0

HCF = 30

Therefore, the largest number which divides both the number is 30.

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