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प्र: 3131×31-27 =? 1789 0

उत्तर : 2. "961 x 961"
व्याख्या :
Answer: B) 961 x 961 Explanation: We know that am×an=am+n ∴3131-27 = 314 = 961 x 961.

प्र: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 1789 0

उत्तर : 2. "18"
व्याख्या :
Answer: B) 18 Explanation: Clearly total persons are increased in 28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

प्र: The missing number in the Series 114, 131, 165, 216, ?, 369 1788 0

उत्तर : 4. "284"
व्याख्या :
Answer: D) 284 Explanation: 114 131 165 216 ? 369 +17 +34 +51 +68 +85 => The missing number in the given Number series = 216 + 68 = 284.

प्र: In a mixture of three varities of oils , the ratio of their weight is 4 : 5 : 8. If 5 kg of oils of the first variety, 10 kg of the second variety and some quantity of oils of the third variety are added to the mixture, the ratio of the weights of three varieties of oils becomes as 5 : 7 : 9 in the final mixture, find the quantity of third variety of oil was ? 1788 0

उत्तर : 4. "45 kg"
व्याख्या :
Answer: D) 45 kg Explanation: Let the ratio of initial quantity of oils be 'x' => 4x, 5x & 8x.Let k be the quantity of third variety of oil in the final mixture.Let the ratio of initial quantity of oils be 'y'From given details,4x + 5 = 5y ..... (1)5x + 10 = 7y .....(2)8x + k = 9y ......(3) By solving (1) & (2), we getx = 5 & y = 5 From (3) => k = 5 Therefore, quantity of third variety of oil was 9y = 9(5) = 45kg.

प्र: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 1779 0

उत्तर : 3. "Rs.2000"
व्याख्या :
Answer: C) Rs.2000 Explanation: Let money invested by Raghu = Rs. xMoney invested by Trishul = 9/10 x = 0.9xMoney invested by Vishal = 9/10x * 110/100 = 0.99xAlso, x+0.9x+0.99x = 5780= x= 5780/2.89 = 2000 Therefore, amount invested by Raghu is Rs. 2000.

प्र: What is two weeks from today? 1779 0

उत्तर : 1. "same day"
व्याख्या :
Answer: A) same day Explanation: We know that the day repeats every 7 days, 14 days, 21 days,... So if today is Monday, after 7 days it is again Monday, after 14 days again it is Monday. Hence, after 2 weeks i.e, 14 days the day repeats and is the same day.

प्र: Find the ratio of the areas of the incircle and circumcircle of a square ? 1778 0

उत्तर : 4. "1 : 2"
व्याख्या :
Answer: D) 1 : 2 Explanation: Let the side of the square be x. Then, its diagonal = 2x. Radius of incircle = x/2 and radius of circumcircle =2x2 . Therefore, required ratio = πx24:πx22 = 14:12=1:2

प्र: 88 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be ? 1778 0

उत्तर : 2. "84 mts"
व्याख्या :
Answer: B) 84 mts Explanation: Vol of silver = πR2h = 66 C.C Given D= 1mm => R = D/2 = 1/20 cm => 227×1202×h = 66 = 66 x 400 x (7/22) = 8400 cm = 84 mtrs.

प्र: 3131×31-27 =? 1789 0

उत्तर : 2. "961 x 961"
व्याख्या :
Answer: B) 961 x 961 Explanation: We know that am×an=am+n ∴3131-27 = 314 = 961 x 961.

प्र: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 1789 0

उत्तर : 2. "18"
व्याख्या :
Answer: B) 18 Explanation: Clearly total persons are increased in 28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

प्र: The missing number in the Series 114, 131, 165, 216, ?, 369 1788 0

उत्तर : 4. "284"
व्याख्या :
Answer: D) 284 Explanation: 114 131 165 216 ? 369 +17 +34 +51 +68 +85 => The missing number in the given Number series = 216 + 68 = 284.

प्र: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 1779 0

प्र: What is two weeks from today? 1779 0

प्र: Find the ratio of the areas of the incircle and circumcircle of a square ? 1778 0

उत्तर : 4. "1 : 2"
व्याख्या :
Answer: D) 1 : 2 Explanation: Let the side of the square be x. Then, its diagonal = 2x. Radius of incircle = x/2 and radius of circumcircle =2x2 . Therefore, required ratio = πx24:πx22 = 14:12=1:2

प्र: 88 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be ? 1778 0

उत्तर : 2. "84 mts"
व्याख्या :
Answer: B) 84 mts Explanation: Vol of silver = πR2h = 66 C.C Given D= 1mm => R = D/2 = 1/20 cm => 227×1202×h = 66 = 66 x 400 x (7/22) = 8400 cm = 84 mtrs.

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प्र: 3131×31-27 =? 1789 05b5cc783e4d2b419777501e2

उत्तर : 2. "961 x 961" व्याख्या :Answer: B) 961 x 961 Explanation: We know that am×an=am+n ∴3131-27 = 314 = 961 x 961.

प्र: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 1789 05b5cc6bde4d2b4197774d93d

उत्तर : 2. "18" व्याख्या :Answer: B) 18 Explanation: Clearly total persons are increased in 28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

प्र: The missing number in the Series 114, 131, 165, 216, ?, 369 1788 05b5cc6b3e4d2b4197774d3fd

उत्तर : 4. "284" व्याख्या :Answer: D) 284 Explanation: 114 131 165 216 ? 369 +17 +34 +51 +68 +85 => The missing number in the given Number series = 216 + 68 = 284.

प्र: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 1779 05b5cc75ee4d2b4197774fc9d

प्र: What is two weeks from today? 1779 05b5cc6a6e4d2b4197774cd47

प्र: Find the ratio of the areas of the incircle and circumcircle of a square ? 1778 05b5cc77fe4d2b419777501c9

उत्तर : 4. "1 : 2" व्याख्या :Answer: D) 1 : 2 Explanation: Let the side of the square be x. Then, its diagonal = 2x. Radius of incircle = x/2 and radius of circumcircle =2x2 . Therefore, required ratio = πx24:πx22 = 14:12=1:2

प्र: 88 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be ? 1778 05b5cc723e4d2b4197774f659

उत्तर : 2. "84 mts" व्याख्या :Answer: B) 84 mts Explanation: Vol of silver = πR2h = 66 C.C Given D= 1mm => R = D/2 = 1/20 cm => 227×1202×h = 66 = 66 x 400 x (7/22) = 8400 cm = 84 mtrs.

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त्रुटि की रिपोर्ट करें

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प्र: 3131×31-27 =? 1789 0

उत्तर : 2. "961 x 961"
व्याख्या :
Answer: B) 961 x 961 Explanation: We know that am×an=am+n ∴3131-27 = 314 = 961 x 961.

प्र: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 1789 0

उत्तर : 2. "18"
व्याख्या :
Answer: B) 18 Explanation: Clearly total persons are increased in 28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

प्र: The missing number in the Series 114, 131, 165, 216, ?, 369 1788 0

उत्तर : 4. "284"
व्याख्या :
Answer: D) 284 Explanation: 114 131 165 216 ? 369 +17 +34 +51 +68 +85 => The missing number in the given Number series = 216 + 68 = 284.

प्र: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 1779 0

प्र: What is two weeks from today? 1779 0

प्र: Find the ratio of the areas of the incircle and circumcircle of a square ? 1778 0

उत्तर : 4. "1 : 2"
व्याख्या :
Answer: D) 1 : 2 Explanation: Let the side of the square be x. Then, its diagonal = 2x. Radius of incircle = x/2 and radius of circumcircle =2x2 . Therefore, required ratio = πx24:πx22 = 14:12=1:2

प्र: 88 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be ? 1778 0

उत्तर : 2. "84 mts"
व्याख्या :
Answer: B) 84 mts Explanation: Vol of silver = πR2h = 66 C.C Given D= 1mm => R = D/2 = 1/20 cm => 227×1202×h = 66 = 66 x 400 x (7/22) = 8400 cm = 84 mtrs.