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On a number line, point P is 2.2 units to the right of the origin and point Q is \(\sqrt{5}\) units to the right of the origin. Which expression correctly represents the distance between P and Q?संख्या रेखा पर बिंदु P मूलबिंदु के दाईं ओर 2.2 इकाई और बिंदु Q मूलबिंदु के दाईं ओर \(\sqrt{5}\) इकाई स्थित है। P और Q के बीच की दूरी का सही व्यंजक कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(\sqrt{5}-2.2\)\(\sqrt{5}-2.2\)
Since \(2.2^2=4.84<5\), we have \(2.2<\sqrt{5}\), so Q lies to the right of P. Distance is larger coordinate minus smaller coordinate: \(\sqrt{5}-2.2\). Exam tip: check the order before subtracting.\(2.2^2=4.84<5\) होने से \(2.2<\sqrt{5}\), अतः Q, P के दाईं ओर है। दूरी = बड़ा स्थानांक − छोटा स्थानांक = \(\sqrt{5}-2.2\)। परीक्षा में पहले दोनों स्थानांकों का क्रम जाँचें।
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