By looking at the growth chart of Aman's hair, find the time interval in which he got a haircut.
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Solution
From the given growth chart we can see that in the interval of 3-4 months the hair length of Aman got reduced from around 10.5 cm to 6.5 cm.
So this reduction in hair must be due to haircut.
So in the duration of 3 - 4 months he surely got a haircut.