If 7 ★ 3 = 40 and 5 ★ 2 = 21, then what is the value of 9 ★ 4?

A. 97

B. 45

C. 65

D. 77

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cgl Save WhatsApp Report

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Answer: C. 65

Answer: (C) 65

\(7^2 - 3^2 = 49 - 9 = 40\) and \(5^2 - 2^2 = 25 - 4 = 21\). So a ★ b = \(a^2 - b^2\).

9 ★ 4 = \(81 - 16 = 65\).

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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