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[" After measuring "120" metres of a rop...

[" After measuring "120" metres of a rope,it was "],[" discovered that the measuring metre rod was "3cm],[" longer.The true length of the rope measured is "],[[" (a) "116m40cm," (b) "121m20cm],[" (c) "123m," (d) "123m60cm]]

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After measuring 120 metres of a rope,it was discovered that the measuring metre rod was 3cm longer.The true length of the rope measured is (a) 116m40cm (b) 121m20cmquad (c)123m (d) 123m60cm

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A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?