GRE प्रश्न और उत्तर का अभ्यास करें
8प्र: How many black cards are in a deck? 1451 05b5cc6a4e4d2b4197774cc62
5b5cc6a4e4d2b4197774cc62- 113false
- 226true
- 339false
- 452false
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उत्तर : 2. "26"
व्याख्या :
Answer: B) 26 Explanation: The total cards in the deck are 52. These 52 cards are divided into 4 suits of 13 cards in each suit. Two Red suits and Two black suits. Red suits :: Heart suit and Diamond suit = 26 Black suits :: Spade suit and Club suit = 26.
प्र: A polygon has 44 diagonals, then the number of its sides are ? 1449 05b5cc754e4d2b4197774fbb9
5b5cc754e4d2b4197774fbb9- 113false
- 29false
- 311true
- 47false
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उत्तर : 3. "11"
व्याख्या :
Answer: C) 11 Explanation: Let the number of sides be n. The number of diagonals is given by nC2 - n Therefore, nC2 - n = 44, n>0 nC2 - n = 44 n2 - 3n - 88 = 0 n2 -11n + 8n - 88 = 0 n(n - 11) + 8(n - 11) = 0 n = -8 or n = 11. As n>0, n will not be -8. Therefore, n=11.
प्र: What should be replaced in the place of '?' in the following series ? JAK, KBL, LCM, MDN, ? 1445 05b5cc764e4d2b4197774fd9e
5b5cc764e4d2b4197774fd9e- 1MENfalse
- 2NEMfalse
- 3NEOtrue
- 4OEPfalse
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उत्तर : 3. "NEO"
व्याख्या :
Answer: C) NEO Explanation: This is an alternating series in alphabetical order. The middle letters follow the order ABCDE. The first and third letters are alphabetical beginning with J. The third letter is repeated as a first letter in each subsequent three-letter segment.
प्र: I go around and in the house but never touches the house. What am I? 1442 05b5cc632e4d2b4197774b9bd
5b5cc632e4d2b4197774b9bd- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.
प्र: What has a neck but no head and wears a cap? 1441 05b5cc697e4d2b4197774c5d5
5b5cc697e4d2b4197774c5d5- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A bottle has a neck but no head and wears a cap.
प्र: Sweety is 54 years old and her mother is 80. How many years ago was Sweety's mother three times her age? 1439 05b5cc6bae4d2b4197774d79e
5b5cc6bae4d2b4197774d79e- 120false
- 241true
- 326false
- 433false
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उत्तर : 2. "41"
व्याख्या :
Answer: B) 41 Explanation: Given P = 54 and M = 80 According to the question, Let ‘A’ years ago, M = 3P => M - A/P - A = 3 => 80 - A = 3(54 - A) => 80 - A = 162 - 3A => 2A = 82 => A = 41 Therefore, A = 41 years ago Sweety’s mother was 3 times of Sweety’s age. Hence, at the age S = 13 and M = 39.
प्र: If the age of father is 4 years greater than the mother and 28 years greater than the son,then what is the age of the father? which one should be used to calculate the age ? 1437 05b5cc6f4e4d2b4197774eff0
5b5cc6f4e4d2b4197774eff0- 1mother/son = Non-prime numberfalse
- 2mother/son = Perfect square number A) only A alone is sufficient B) only B alone is sufficienttrue
- 3both A and B are requiredfalse
- 4A) only A alone is sufficient B) only B alone is sufficient C) both A and B are required D)false
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उत्तर : 2. "mother/son = Perfect square number
A) only A alone is sufficient
B) only B alone is sufficient"
व्याख्या :
Answer: B) only B alone is sufficient Explanation: For the given problem there are three possiblities.Father's age can be = 36, 31, 29Mother's age = 32, 27, 25Son's age = 8, 3, 1. By using only B it can be calculated.
प्र: Every year before the festive season, a brand store increases the price of the product by 42% and then introduce two successive discount of 10% and 11% respectively. What is percentage loss and percentage gain ? 1435 05b5cc745e4d2b4197774f9f9
5b5cc745e4d2b4197774f9f9- 13.25% lossfalse
- 213.742% lossfalse
- 33.25% gainfalse
- 413.742% gaintrue
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उत्तर : 4. "13.742% gain"
व्याख्या :
Answer: D) 13.742% gain Explanation: Let CP = 100,42 % increase => SP = 14210 % discount in SP => ((142 x 10)/100) = 14.2So 1st SP = (142 - 14.2) = 127.8, again 12 % discount in 1st SP ((127.8 x 11)/100) = 14.0582nd SP = (127.8 - 14.058) = 113.742, So finally CP = 100, SP = 113.742, => gain = 13.742%.

