IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Highest Bajra producing state in India? 1709 05b5cc69de4d2b4197774c8c1
5b5cc69de4d2b4197774c8c1- 1Rajasthantrue
- 2Gujaratfalse
- 3Uttar Pradeshfalse
- 4Haryanafalse
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उत्तर : 1. "Rajasthan"
व्याख्या :
Answer: A) Rajasthan Explanation:
प्र: Can you Solve the Problem ? 1709 05b5cc6cfe4d2b4197774e337
5b5cc6cfe4d2b4197774e337- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Let the two digits be x & y From given data in the question, we get x + y = 3(x - y) x + y = 3x - 3y => 2x = 4y x/y = 2/1 For having the 2:1, numbers satisfying are 12, 21, 24, 42, 36, 63, 48, 84 From this 36 is eleminated because it is a perfect square and no others are prime or perfect squares. Hence, there exists 7 such 2-digit numbers => 12, 21, 24, 42, 63, 48, 84.
प्र: In how many different ways can the letters of the word 'HAPPYHOLI' be arranged? 1709 05b5cc6a7e4d2b4197774ce0e
5b5cc6a7e4d2b4197774ce0e- 189,972false
- 290,720true
- 372,000false
- 481,000false
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उत्तर : 2. "90,720"
व्याख्या :
Answer: B) 90,720 Explanation: The given word HAPPYHOLI has 9 letters These 9 letters can e arranged in 9! ways. But here in the given word letters H & P are repeated twice each Therefore, Number of ways these 9 letters can be arranged is 9!2! x 2! = 9 x 8 x 7 x 6 x 5 x 4 x 32 = 90,720 ways.
प्र: Which State has been declared as the Open Defecation Free state? 1709 05b5cc6b9e4d2b4197774d6b2
5b5cc6b9e4d2b4197774d6b2- 1Uttarakhandfalse
- 2Arunachal Pradeshtrue
- 3Maharashtrafalse
- 4Uttar Pradeshfalse
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उत्तर : 2. "Arunachal Pradesh"
व्याख्या :
Answer: B) Arunachal Pradesh Explanation: Arunachal Pradesh State has been declared as the Open Defecation Free state.
प्र: If in an A.P series 18th term is 29 and 29th term is 18. Then find the 49th term ? 1709 05b5cc711e4d2b4197774f3c3
5b5cc711e4d2b4197774f3c3- 1-3false
- 2-2true
- 30false
- 41false
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उत्तर : 2. "-2"
व्याख्या :
Answer: B) -2 Explanation: We know that in A.P series18th term = a + 17d29th term = a + 28dBut given a + 17d = 29..........(i)a + 28d = 18......... (ii)Solving equation (i) and (ii), we getd = -1put d = -1 in any of the above equations and we get, a = 46Now, we know 49th term can be written as, a + 48d putting the value of a and d in the above equation,a + 48d = 46 + 48(-1) = 46 - 48 = -2 Hence, the 49th term is -2.
प्र: 200 D for P G in M 1709 05b5cc632e4d2b4197774b9a8
5b5cc632e4d2b4197774b9a8- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Logically the given letter equation implies that, 200 Dollars for Passing GO in Monopoly.
प्र: Raju sold an article by giving a discount of 8% for Rs. 17,940 and earn profit of 19.6 %. If he did not give discount then how much profit percentage he gets ? 1708 05b5cc6cde4d2b4197774e1a9
5b5cc6cde4d2b4197774e1a9- 127%false
- 230%true
- 332%false
- 425%false
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उत्तर : 2. "30%"
व्याख्या :
Answer: B) 30% Explanation: Let the M.R.P of an article be 100 % Selling price of article =Rs. 17940 If he give a discount of 8 % then S.P = 92 % 92 % = 17490 100 % = 19500 Now C.P of the article is 17490 x 100/119.6 = 15000 If he did not give the discount, then Required profit percentage =
प्र: The energy associated with motion is called 1708 05b5cc62ae4d2b4197774b89a
5b5cc62ae4d2b4197774b89a- 1Potential energyfalse
- 2Kinetic energytrue
- 3Both A & Bfalse
- 4None of the abovefalse
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उत्तर : 2. "Kinetic energy"
व्याख्या :
Answer: B) Kinetic energy Explanation: Energy can be either a potential energy or a kinetic energy. The energy associated with motion is called Kinetic energy and it can be stored. And the energy associated with position is called Potential energyand it cannot be stored.

