प्रश्न और उत्तर का अभ्यास करें
8प्र: In a competitive exam, the number of passed students was four times the number of failed students. If there had been 35 fewer appeared students and 9 more had failed, the ratio of passed and failed students would have been 2 : 1, then the total number of students appered for the exam ? 8176 05b5cc6c2e4d2b4197774dbbe
5b5cc6c2e4d2b4197774dbbe- 1175false
- 2165false
- 3155true
- 4145false
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उत्तर : 3. "155"
व्याख्या :
Answer: C) 155 Explanation: Let the number of failed students be x => Number of passed students = 4x So total number of students was 5x From the given data, If total number of students be 5x – 35 => 4x-35-9/x+9 = 2/1 => 4x – 44 = 2(x + 9) => 4x – 2x = 18 + 44 => x = 31 Total number = 31×5 = 155
प्र: Solve the Logical Puzzle ? 1291 05b5cc6c2e4d2b4197774dbb9
5b5cc6c2e4d2b4197774dbb9- 12false
- 24true
- 38false
- 40false
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उत्तर : 2. "4"
व्याख्या :
Answer: B) 4 Explanation:
प्र: Three friends Rudra, Siva and Anvesh start to run around a circular stadium. They complete a revolution in 24, 36 and 30 seconds respectively. After how many minutes will they meet at the starting point ? 2010 05b5cc6c2e4d2b4197774dbb4
5b5cc6c2e4d2b4197774dbb4- 160false
- 2120false
- 3360false
- 46true
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उत्तर : 4. "6"
व्याख्या :
Answer: D) 6 Explanation: For this we have to find the LCM of 24, 36 and 30 LCM of 24, 36 and 30 = 360 sec 360/60 min = 6 minutes.
प्र: Find the missing number in the following Series ? 18, 97, 26, 91, ? , 83 2201 05b5cc6c2e4d2b4197774dbaf
5b5cc6c2e4d2b4197774dbaf- 132false
- 236false
- 330false
- 434true
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उत्तर : 4. "34"
व्याख्या :
Answer: D) 34 Explanation: The given series follows the pattern that, 18, 97, 26, 91, ?, 83 => 18 + 8 = 26 => 97 - 8 = 91 => 26 + 8 = 34 => 91 - 8 = 83 Hence, the missing number is 34.
प्र: P alone can do a piece of work in 24 days. The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work. How many days are required to complete by P and Q working together ? 1657 05b5cc6c2e4d2b4197774dbaa
5b5cc6c2e4d2b4197774dbaa- 19 3/5 daystrue
- 27 daysfalse
- 36 3/7 daysfalse
- 48 daysfalse
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उत्तर : 1. "9 3/5 days"
व्याख्या :
Answer: A) 9 3/5 days Explanation: Let the total work be 'W' As per the given information, P can complete the work 'W' in 24 days. => one day work of P = W/24 And also given that, The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work => PW/3 = QW/2 => P's 1 day = W/24 ? = W/3 => ? = 24W/3W = 8 => QW/2 = 8 days => Q alone can complete the work W in 16 days => P + Q can complete the work in 1/24 + 1/16 = 5/48 => 48/5 days = 9 3/5 days.
प्र: Sum of the ages of Rajesh, Suresh, Mahesh and Dinesh is 76 years. 7 years hence, their age ratio is 7:6:5:8. Find Mahesh’s present age ? 3016 05b5cc6c2e4d2b4197774dba5
5b5cc6c2e4d2b4197774dba5- 117 yearsfalse
- 213 yearstrue
- 314 yearsfalse
- 416 yearsfalse
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उत्तर : 2. "13 years"
व्याख्या :
Answer: B) 13 years Explanation: Given R + S + M + D = 76 => R+7 : S+7 : M+7 : D+7 = 7:6:5:8 => Let the ratio = x => M+7 = 5x => M = 5x-7 => R = 7x-7 => S = 6x-7 => D = 8x-7 => R + S + M + D = 76 => 7x-7 + 6x-7 + 5x-7 + 8x-7 = 76 => 26x - 28 = 76 => 26x = 104 => x = 4 => Mahesh's present age = 5x-7 = 20 - 7 = 13 years.
प्र: Read the following puzzle carefully, answer the question asked below ? Seven person K, L, M, N, O, P & Q likes seven colours. Yellow, White, Red, Orange, Blue, Gray and Black. They visit in different days starting from Monday to Sunday. 1) K visits one day after Thursday. 2) Only 4 people are in between K and L 3) The one who likes Red colour visits immediately after L. 4) Only one person visit between Red and Blue 5) The one who like white colour visit before one of days on which day M visits 6) The one who like white colour does not visit on Monday. 7) Only 1 person is in between N and O. N like Yellow. 8) There are same as many person in between K and Blue colour which are one less in between L and M. 9) Neither Q nor P likes Black. 10) Q does not visit on Saturday and does not like grey colour. Question : Who visits on Sunday and Tuesday and their favourite colors ? 2461 15b5cc6c2e4d2b4197774dba0
5b5cc6c2e4d2b4197774dba0- 1P & Mfalse
- 2N & Kfalse
- 3K & Ltrue
- 4P & Qfalse
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उत्तर : 3. "K & L"
व्याख्या :
Answer: C) K & L Explanation: Monday - N - Yellow Tuesday - L - White Wednesday - O - Red Thursday - Q - Orange Friday - M - Blue Saturday - P - Grey Sunday - K - Black From the above table, K & L visits Sunday & Tuesday and their favourite colors are Black and white respectively.
प्र: Synonym for the word : Bleak 1703 05b5cc6c1e4d2b4197774db9b
5b5cc6c1e4d2b4197774db9b- 1baretrue
- 2lushfalse
- 3warmfalse
- 4verdantfalse
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उत्तर : 1. "bare"
व्याख्या :
Answer: A) bare Explanation: Bleak means an area of land lacking vegetation and exposed to the elements like deserts.