The class mark of a class is 18 and its lower limit is 15.5. Find its upper limit.

Q.17 The class mark of a class is 18 and its lower limit is 15.5. Find its upper limit.

Doubtly Asked 29 Oct 2026 Practice test ssc 10th Save WhatsApp Report

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Answer: Upper limit = 20.5

\(\dfrac{15.5 + u}{2} = 18 \Rightarrow 15.5 + u = 36 \Rightarrow u = 20.5\)

Doubtly AI · 29 Oct 2026 AI-verified · Nov 2026 Report

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