GATE प्रश्न और उत्तर का अभ्यास करें
8प्र: A mother can do a certain job in x hours. Her daughter takes twice as long to do the job. Working together, they can do the job in 6 hours. How many hours does the mother take to do the job ? 1382 05b5cc6cfe4d2b4197774e2fe
5b5cc6cfe4d2b4197774e2fe- 13false
- 26false
- 39true
- 412false
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उत्तर : 3. "9"
व्याख्या :
Answer: C) 9 Explanation: The mother completes the job in x hours.So, the daughter will take 2x hours to complete the same job. In an hour, the mother will complete 1/x of the total job.In an hour, the daughter will complete 1/2x of the total job. So, if the mother and daughter work together, in an hour they will complete 1/x + 1/2x of the job.i.e., in an hour they will complete 3/2x of the job. The question states that they complete the entire task in 6 hours if they work together.i.e., they complete 1/6 th of the task in an hour. Equating the two information, we get 3/2x = 1/6By solving for x, we get 2x = 18 or x = 9. The mother takes 9 hours to complete the job.
प्र: A simple interest earned on certain amount is triple the money when invested for 16 years.what is the interest rate offered ? 1381 05b5cc745e4d2b4197774fa13
5b5cc745e4d2b4197774fa13- 113.33 %false
- 214.25 %false
- 316.98 %false
- 418.75 %true
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उत्तर : 4. "18.75 %"
व्याख्या :
Answer: D) 18.75 % Explanation: Given,S.I = 3 Principal Amount=> 3A = A x 16 x R/100By solving, we get => R = 18.75%
प्र: Find the lowest 4-digit number which when divided by 3, 4 or 5 leaves a remainder of 2 in each case ? 1376 05b5cc6dae4d2b4197774e8cd
5b5cc6dae4d2b4197774e8cd- 11020false
- 21040false
- 31060false
- 41022true
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उत्तर : 4. "1022"
व्याख्या :
Answer: D) 1022 Explanation: Lowest 4-digit number is 1000.LCM of 3, 4 and 5 is 60.Dividing 1000 by 60, we get the remainder 40. Thus, the lowest 4-digit number that exactly divisible by 3, 4 and 5 is 1000 + (60 - 40) = 1020.Now, add the remainder 2 that's required. Thus, the answer is 1022.
प्र: What is 12 S of the Z? 1375 05b5cc6b5e4d2b4197774d515
5b5cc6b5e4d2b4197774d515- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
12 S of Z represents 12 Signs of the Zodiac. It is similar to the 1. 52 W in a Y - 52 weeks in a year 2. 3 H in a C - 3 Hands in a Clock 3. 3600 S in an H - 3600 Seconds in an Hour 4. 5 O in the W - 5 Oceans in the World
प्र: I have keys but no locks, I have space but no room. You can enter but can't go outside. What am I? 1370 05b5cc622e4d2b4197774b7d9
5b5cc622e4d2b4197774b7d9- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
I am Keyboard. A Keyboard has keys of letters, space button and enter button.
प्र: Who was apointed as ICAI ( Institute of Chartered Accountants of India) president in 2017 ? 1370 05b5cc745e4d2b4197774fa63
5b5cc745e4d2b4197774fa63- 1Naveen N D Guptafalse
- 2Nilesh Shivji Vikamseytrue
- 3Rajesh Kakkarfalse
- 4Bhavraj Singhfalse
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उत्तर : 2. "Nilesh Shivji Vikamsey"
व्याख्या :
Answer: B) Nilesh Shivji Vikamsey Explanation: The Institute of Chartered Accountants of India (ICAI) elected Nilesh Shivji Vikamsey as president and Naveen N D Gupta as vice-president. They have been elected for the year 2017-18. Vikamsey, who served as vice-president, has been a member of the ICAI since 1985. Gupta has been a chartered accountant for more than 20 years.
प्र: What will come in place of question mark (?) in the following number series? 4, 3, 4, 7, 15, ? 1365 05b5cc6c5e4d2b4197774dde6
5b5cc6c5e4d2b4197774dde6- 142false
- 244true
- 353false
- 456false
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उत्तर : 2. "44"
व्याख्या :
Answer: B) 44 Explanation: 4 3 4 7 15 ? ×1-1 ×1+1 ×2-1 ×2+1 ×3-1 15x3 - 1 = 45 - 1 = 44
प्र: Simplify the following : 4 15 × 3 13 + ? = 20% of 120 1362 05b5cc6a8e4d2b4197774ce71
5b5cc6a8e4d2b4197774ce71- 110true
- 224false
- 336false
- 440false
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उत्तर : 1. "10"
व्याख्या :
Answer: A) 10 Explanation: Given equation can be written as 215 x 103 + ? = 24=> 14 + ? = 24=> ? = 24 - 14=> ? = 10

