GATE प्रश्न और उत्तर का अभ्यास करें
8प्र: Rajan's present age is three times his daughter's and nine-thirteenth of his mother's present age. The sum of the present ages of all three of them is 125 years. What is the difference between the present ages of Rajan's daughter and Rajan's mather ? 2635 05b5cc72ce4d2b4197774f773
5b5cc72ce4d2b4197774f773- 132 yearsfalse
- 248 yearsfalse
- 362 yearsfalse
- 450 yearstrue
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उत्तर : 4. "50 years"
व्याख्या :
Answer: D) 50 years Explanation: Let Rajan's present age be 'x' years.=> Then his daughter's present age is = x/3 years.His mother's present age = 13x/9 yearsNow, according to the question,x + x/3 + 13x/9 = 125=> x = 125x9/25 = 45Therefore, required difference = 13x/9 - x/3 = 13x - 3x/9 = 10x/9=> 10 x 45/9 = 50 years.
प्र: Which number replaces the '?' in the given series 108, 127, 2413, 2430, 41310, ?, 619875 2633 05b5cc767e4d2b4197774fdf2
5b5cc767e4d2b4197774fdf2- 141975false
- 241325true
- 384375false
- 441365false
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उत्तर : 2. "41325"
व्याख्या :
Answer: B) 41325 Explanation: The given series follows a pattern of +19, x19, +17, x17, +15, x15,... Here the number which is to be replaced in ? is 41310+15=41325.
प्र: In each question given below four conclusions are followed by statements. You have to take the three given statements to be true (even if they seem to be at variance from the commonly known facts). Read the conclusions and decide which of the following set of statement indicate that conclusion is logically follows. Statements : 1. All chairs are tents. 2. No chairs is jugs. 3. No jugs is glasses. 4. No glasses is pots. Conclusions : I. All pots are tents. II. All glasses are chair. III. Some jugs are tents. 2632 05b5cc6b7e4d2b4197774d61f
5b5cc6b7e4d2b4197774d61f- 1Only conclusion I followsfalse
- 2Both conclusion II & III followsfalse
- 3None followstrue
- 4Only conclusion II followsfalse
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उत्तर : 3. "None follows"
व्याख्या :
Answer: C) None follows Explanation:
प्र: I have four fingers and a thumb, but not alive. Who am I? 2631 05b5cc615e4d2b4197774b6a7
5b5cc615e4d2b4197774b6a7- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A glove. It has 5 fingers as we have but not alive.
प्र: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? ___ utt ___ tt ___ ttu ___ 2631 05b5cc6f1e4d2b4197774ef59
5b5cc6f1e4d2b4197774ef59- 1t t u tfalse
- 2t u t tfalse
- 3t u u ttrue
- 4t t t ufalse
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उत्तर : 3. "t u u t"
व्याख्या :
Answer: C) t u u t Explanation: t, u, u and t. The sequence is : tut tut tut tut.
प्र: 6 B in an O? 2630 05b5cc669e4d2b4197774bf59
5b5cc669e4d2b4197774bf59- 16 books in an orderfalse
- 26 balls in an overtrue
- 36 bats in an oddfalse
- 4None of the abovefalse
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उत्तर : 2. "6 balls in an over"
व्याख्या :
Answer: B) 6 balls in an over Explanation: 6 b in an o means 6 balls in an over in cricket.
प्र: If a number 72k23l is divisible by 88. Then find value of k and l ? 2628 05b5cc745e4d2b4197774fa36
5b5cc745e4d2b4197774fa36- 1k=8 & l=2false
- 2k=7 & l=2true
- 3k=8 & l=3false
- 4k=7 & l=1false
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उत्तर : 2. "k=7 & l=2"
व्याख्या :
Answer: B) k=7 & l=2 Explanation: If a number to be divisile by 88, it should be divisible by both "8" and "11" Check for '8' :For a number to be divisible by "8", the last 3-digit should be divisible by "8"Here 72x23y --> last 3-digit is '23y'So y=2 [ (i.e) 232 is absolutely divisible by "8"] Chech for '11' :For a number to be divisible by "11" , sum of odd digits - sum of even digits should be divisible by "11"(7 + x + 3) - (2 + 2 + y)(7 + x + 3) - (2 + 2 + 2)(10 + x) - 6 should be divisible by "11"for x = 7=> 17 - 6 = 11 [ which is absolutely divisible by "11"] So x = 7 , y= 2.
प्र: Who invented Dynamite? 2626 05b5cc6bbe4d2b4197774d834
5b5cc6bbe4d2b4197774d834- 1Graham Bellfalse
- 2Nikola Teslafalse
- 3Alfred Nobeltrue
- 4Louis Pateurfalse
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उत्तर : 3. "Alfred Nobel"
व्याख्या :
Answer: C) Alfred Nobel Explanation: Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing Dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.