a $ b = a² − b² అని ఇవ్వబడితే, 7 $ 5 దేనికి సమానం?
A35
B4
C74
D24
Answer & Solution
Correct answer: D. 24
వర్గం చేయగా 49 మరియు 25 వస్తాయి, వాటి భేదం 24.
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