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प्र: Hemavathi gets 3 marks for each right sum and loses 2 marks for each wrong sum. He attempts 35 sums and obtains 60 marks. The number of sums attempted correctly is ? 1397 0

उत्तर : 4. "26"
व्याख्या :
Answer: D) 26 Explanation: Let, Hema attempted 'k' sum correctly, then k x 3 -2 x(35-k) = 605k = 130k = 26 so 26 correct sums.

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 ? 1396 0

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: Which of the following is the largest unit of information? 1395 0

उत्तर : 1. "1 TB"
व्याख्या :
Answer: A) 1 TB Explanation: 1 TB > 1 GB > 1 MB > 1 KB 1 Tb (Tera Byte) = 1024 GB 1 GB (Giga Byte) = 1024 MB 1 MB (Mega Byte) = 1024 KB 1 KB (Kilo Byte) = 1024 Bytes 1 Byte = 8 Bit Hence, largest unit of information is TB (Tera Byte) and smallest unit of information is Bit.

प्र: What does one mole of H2O correspond to 1394 0

उत्तर : 2. "18 gms"
व्याख्या :
Answer: B) 18 gms Explanation: The molar mass of H2O can be calculated as the following. M(H2O)= [2 x M(H)] + [M(O)]. And we know that M(H) = 1g/mol, M(O) = 16g/mol. So, M(H2O)= 2x1 + 16 = 18g/mol, That means 1 mole of H2O contains 18g. Hence, one mole of H2O corresponds to 18 grams.

प्र: I, J , K and L are all distinct individual. I is the daughter of J. J is the son of K and 'K' is the father of L. If B is the son of J and B has one brother, 'D'. Then which of the following statements is/ are true ? I. I is the sister of D. II. D and B are brother. III. K is the grand father of D. 1394 0

उत्तर : 4. "All of these"
व्याख्या :
Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.

प्र: If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ? 1393 0

उत्तर : 3. "3"
व्याख्या :
Answer: C) 3 Explanation: Given two lines are parallel pa+b=2 b=-pa+2..........(1) 3a+b=4 b=-3a+4 ...........(2) m1 = -p m2= -3 The condition for the two lines to be parallel is m1=m2 p = 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% ? 1393 0

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: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1392 0

उत्तर : 3. "41 sec"
व्याख्या :
Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.

प्र: Hemavathi gets 3 marks for each right sum and loses 2 marks for each wrong sum. He attempts 35 sums and obtains 60 marks. The number of sums attempted correctly is ? 1397 0

उत्तर : 4. "26"
व्याख्या :
Answer: D) 26 Explanation: Let, Hema attempted 'k' sum correctly, then k x 3 -2 x(35-k) = 605k = 130k = 26 so 26 correct sums.

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 ? 1396 0

प्र: Which of the following is the largest unit of information? 1395 0

प्र: What does one mole of H2O correspond to 1394 0

उत्तर : 4. "All of these"
व्याख्या :
Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.

प्र: If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ? 1393 0

उत्तर : 3. "3"
व्याख्या :
Answer: C) 3 Explanation: Given two lines are parallel pa+b=2 b=-pa+2..........(1) 3a+b=4 b=-3a+4 ...........(2) m1 = -p m2= -3 The condition for the two lines to be parallel is m1=m2 p = 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% ? 1393 0

प्र: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1392 0

उत्तर : 3. "41 sec"
व्याख्या :
Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.

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त्रुटि की रिपोर्ट करें

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त्रुटि की रिपोर्ट करें

प्र: Hemavathi gets 3 marks for each right sum and loses 2 marks for each wrong sum. He attempts 35 sums and obtains 60 marks. The number of sums attempted correctly is ? 1397 05b5cc73de4d2b4197774f90c

उत्तर : 4. "26" व्याख्या :Answer: D) 26 Explanation: Let, Hema attempted 'k' sum correctly, then k x 3 -2 x(35-k) = 605k = 130k = 26 so 26 correct sums.

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 ? 1396 05b5cc6c7e4d2b4197774dea5

प्र: Which of the following is the largest unit of information? 1395 05b5cc67ee4d2b4197774c22a

प्र: What does one mole of H2O correspond to 1394 05b5cc69ce4d2b4197774c85a

उत्तर : 4. "All of these" व्याख्या :Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.

प्र: If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ? 1393 05b5cc6c6e4d2b4197774de54

उत्तर : 3. "3" व्याख्या :Answer: C) 3 Explanation: Given two lines are parallel pa+b=2 b=-pa+2..........(1) 3a+b=4 b=-3a+4 ...........(2) m1 = -p m2= -3 The condition for the two lines to be parallel is m1=m2 p = 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% ? 1393 05b5cc6c6e4d2b4197774de5e

प्र: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1392 05b5cc6c8e4d2b4197774df0f

उत्तर : 3. "41 sec" व्याख्या :Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

प्र: Hemavathi gets 3 marks for each right sum and loses 2 marks for each wrong sum. He attempts 35 sums and obtains 60 marks. The number of sums attempted correctly is ? 1397 0

उत्तर : 4. "26"
व्याख्या :
Answer: D) 26 Explanation: Let, Hema attempted 'k' sum correctly, then k x 3 -2 x(35-k) = 605k = 130k = 26 so 26 correct sums.

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 ? 1396 0

प्र: Which of the following is the largest unit of information? 1395 0

प्र: What does one mole of H2O correspond to 1394 0

उत्तर : 4. "All of these"
व्याख्या :
Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.

प्र: If two line pa + b = 2 and 3a + b = 4 are parallel to each other, then what is the value of p ? 1393 0

उत्तर : 3. "3"
व्याख्या :
Answer: C) 3 Explanation: Given two lines are parallel pa+b=2 b=-pa+2..........(1) 3a+b=4 b=-3a+4 ...........(2) m1 = -p m2= -3 The condition for the two lines to be parallel is m1=m2 p = 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% ? 1393 0

प्र: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1392 0

उत्तर : 3. "41 sec"
व्याख्या :
Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.