Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: The breadth of a rectangular field is 75% of its length. If perimeter of the field is 1050 m, what will be th area of field ? 1389 0

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    65700 sq.m
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    54500 sq.m
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    78700 sq.m
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  • 4
    67500 sq.m
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उत्तर : 4. "67500 sq.m"
व्याख्या :

Answer: D) 67500 sq.m Explanation: Let the length be 'l' and breadth be 'b'. b = l × 3/4__________(a) 2(l+b) = 1050 l+b = 525___________(b) From equations (a) and (b), l = 300m, b = 225 m Area = l × b = 300 × 225 = 67500 sq.m.

प्र: It was Tuesday on Jan 1, 2006. What was the day of the week Jan 1, 2010 ? 1387 0

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    Sunday
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    Friday
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    Monday
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    Tuesday
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उत्तर : 2. "Friday"
व्याख्या :

Answer: B) Friday Explanation: On 31st December, 2005 it was Monday. Number of odd days from the year 2006 to the year 2009 = (1 + 1 + 2 + 1) = 5 days. On 31st December 2009, it was Thursday. Thus, on 1st Jan, 2010 it is Friday.

प्र: Rajeev's age is four more than the age of Shilpa. The age of Shilpa can be obtained by subtracting four times her age 4 years ago from the four times her age after 4 years. What was Rajeev's age before 4 years ? 1384 0

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    36 years
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    28 years
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    32 years
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    40 years
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उत्तर : 3. "32 years"
व्याख्या :

Answer: C) 32 years Explanation: Let Shilpa's present age is p years According to question, p = 4(x+4) – 4(x–4) p = 4x+16 – 4x+16 p = 32 Shilpa's present age = 32 years Rajeev is four years older than Shilpa => Shilpa's present age = Rajeev's age 4 years before. => Rajeev's age 4 years before = 32 years.

प्र: K men agree to donate a gift of Rs. L to trust. If three men drop out how much more will each have to contribute towards the purchase of the gift ? 1379 0

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    L / (k-3)
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    k / (L-3)
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    2K / 3L-K
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    3L / K(K-3)
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उत्तर : 4. "3L / K(K-3)"
व्याख्या :

Answer: D) 3L / K(K-3) Explanation: Intial contribution = L/KAfter 3 men drop, then contribution =L/K-3The amount more to pay in contribution = LK-3 - LK   = 3LK(K-3)

प्र: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1378 0

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    2:3
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    4:3
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    3:4
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    3:2
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उत्तर : 4. "3:2"
व्याख्या :

Answer: D) 3:2 Explanation: Let he mixes the oils in the ratio = x : y Then, the cost price of the oils = 60x + 65y Given selling price = Rs. 68.20 => Selling price = 68.20(x+y) Given profit = 10% = SP - CP => 10/100 (60x + 65y) = 68.20(x+y)-(60x + 65y) => 6x + 6.5y = 8.20x + 3.20y =>2.2x = 3.3y => x : y = 3 : 2

प्र: How many weekends in a year? 1377 0

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    52
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    53
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    103
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    104
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उत्तर : 4. "104"
व्याख्या :

Answer: D) 104 Explanation: In normal we have 104 Weekend Days. We know that a Each normal year has 365 days or 52 weeks plus one day, and each week has two weekend days, which means there are approximately 104 weekend days each year. Whereas in a leap year we have 366 days it adds one more day to the year. And what makes the change is the starting day of the year.

प्र: In a triangle ABC, angle 'a' is the smallest one & A+7B = 112. Find the range of value 'c' ? 1377 0

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    138 to 164
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    125 to 147
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    148 to 158
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    152 to 164
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उत्तर : 4. "152 to 164"
व्याख्या :

Answer: D) 152 to 164 Explanation: A+7B=112 it is clear that A = 14, then it becomes A>=B, but A is smallest angle) givenso, range of A is 0.0001 to 13.9999 ( I am taking upto 4 decimal places)so, range of B becomes 14 to 16 ( after rounding off to 4 decimal places)so, range of C becomes 152 to 164 ( after rounding off to 4 decimal places)

प्र: If K earns 12% less than L, then how much percent more does L earn than K ? 1375 0

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    13.96%
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    13.63%
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    13.56%
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    14.01%
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उत्तर : 2. "13.63%"
व्याख्या :

Answer: B) 13.63% Explanation: Required % is given by    => 12100-12x100   = 1200/88   = 13.636%

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