Mathematics - बीजगणित: 39 MCQs with Answers
Mathematics- बीजगणित
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0%Q31. यदि x = √5 + 2 है, तो x² − 4√5 ज्ञात कीजिए।
Right Answer: 9
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Q32. यदि x + 1/x = 5 है, तो x² + 1/x² का मान ज्ञात कीजिए।
Right Answer: 23
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Q33. 500 को दो भागों में इस प्रकार विभाजित किया जाता है कि एक भाग के दो-तिहाई भाग का मान दूसरे भाग से 40 अधिक हो। बड़ा भाग ज्ञात करें।
Right Answer: 324
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Q34. 27 को दो भागों में इस प्रकार बाँटें कि पहले भाग के 3 गुने और दूसरे भाग के 4 गुने का योग 90 हो। बड़ा भाग ज्ञात करें।
Right Answer: 18
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Q35. {(0.6)³ − (0.4)³} ÷ {(0.6)² + (0.6×0.4) + (0.4)²} का मान ज्ञात करें।
Right Answer: 0.2
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Q36. समीकरणों 2(ax - by) + a + 4b = 0 और 2(bx + ay) + b - 4a = 0 को संतुष्ट करने वाले x और y के मान हैं
Right Answer: x = -1/2, y = 2
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Q37. यदि -3 बहुपदीय f(x) = 2x² - (a + 1) x + 4a का एक शून्य है तो a का मान है
Right Answer: -3
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Q38. यदि 3x - 4y + 5 = 0 और 6x - 8y + k = 0 समान रेखा को दर्शाते हैं, तो k का मान है
Right Answer: 10
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Q39. एक दो अंकों की संख्या का सात गुना उसके अंकों का स्थान परिवर्तित करने पर प्राप्त संख्या का चार गुना है और अंकों का अंतर 3 हैं। तो संख्या है
Right Answer: 36
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