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प्र: A boat takes 2 hours to travel from point A to B in still water. To find out its speed upstream, which of the following information is/are required? A. Distance between point A and B. B. Time taken to travel downstream from B to A. C. Speed of the stream of water. 2401 0

उत्तर : 4. "Any one pair of A and B, B and C or C and A is sufficient"
व्याख्या :
Answer: D) Any one pair of A and B, B and C or C and A is sufficient Explanation: Let distance between A & B = d kmLet speed in still water = x kmphLet speed of current = y kmph from the given data,d/x = 2 From A) we get dFrom B) we get d/x+yFrom C) we get y So, Any one pair of A and B, B and C or C and A is sufficient to give the answer i.e, the speed of upstream.

प्र: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I'm always found, toiling away with little sound. What am I? 2399 0

उत्तर :
व्याख्या :
A Windmill.

प्र: Who began public health and sanitation systems? 2399 0

उत्तर : 3. "Romans"
व्याख्या :
Answer: C) Romans Explanation: Romans (753 BC - AD 410) began public health and sanitation systems. Romans established the first public health and sanitation systems by building sewers and aqueducts. They also treated diseases with diet, exercise and meditation.

प्र: During which process is water produced? 2399 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: Which of the following is not a function of saliva? 2396 0

उत्तर : 1. "contains fluoride to harden the tooth enamel"
व्याख्या :
Answer: A) contains fluoride to harden the tooth enamel Explanation: Saliva is produced by the salivary gland which helps in food digestion. Option A) contains fluoride to harden the tooth enamel is not the function of saliva.

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

प्र: A boat takes 2 hours to travel from point A to B in still water. To find out its speed upstream, which of the following information is/are required? A. Distance between point A and B. B. Time taken to travel downstream from B to A. C. Speed of the stream of water. 2401 0

प्र: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I'm always found, toiling away with little sound. What am I? 2399 0

उत्तर :
व्याख्या :
A Windmill.

प्र: Who began public health and sanitation systems? 2399 0

प्र: During which process is water produced? 2399 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: Which of the following is not a function of saliva? 2396 0

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

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प्र: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I'm always found, toiling away with little sound. What am I? 2399 05b5cc611e4d2b4197774b66f

उत्तर : व्याख्या :A Windmill.

प्र: Who began public health and sanitation systems? 2399 05b5cc60de4d2b4197774b5eb

प्र: During which process is water produced? 2399 05b5cc655e4d2b4197774bd5f

उत्तर : 2. "Electron transport chain" व्याख्या :Answer: B) Electron transport chain Explanation:

प्र: Which of the following is not a function of saliva? 2396 05b5cc61ee4d2b4197774b75d

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 05b5cc6dee4d2b4197774ea60

उत्तर : 4. "5" व्याख्या :Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 05b5cc6bce4d2b4197774d8b1

उत्तर : 1. "4096" व्याख्या :Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 05b5cc6e5e4d2b4197774ed3d

उत्तर : 1. "14 days" व्याख्या :Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

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त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

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त्रुटि की रिपोर्ट करें

प्र: I have four wings, but cannot fly, I never laugh and never cry; On the same spot I'm always found, toiling away with little sound. What am I? 2399 0

उत्तर :
व्याख्या :
A Windmill.

प्र: Who began public health and sanitation systems? 2399 0

प्र: During which process is water produced? 2399 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: Which of the following is not a function of saliva? 2396 0

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.