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Priya Sharma
22 Nov 2023 10:47 AM study24x7 study24x7

In a four high rolling mill, there are four rolls out of which

A

one is working roll and three are backing up rolls

B

two are working rolls and two are backing up rolls

C

three are working rolls and one is backing up roll

D

all of the four are working rolls

IIT Entrance IIT-JEE
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