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प्र: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is ? 1675 0

उत्तर : 4. "3 : 2"
व्याख्या :
Answer: D) 3 : 2 Explanation: Let the speeds of the two trains be x m/sec and y m/sec respectively. Then, length of the first train = 27 x meters, and length of the second train = 17 y meters. (27 x + 17 y) / (x + y) = 23 => 27 x + 17 y = 23 x + 23 y => 4 x = 6 y => x/y = 3/2.

प्र: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 1675 0

उत्तर : 3. "[6 + (261/315)] days"
व्याख्या :
Answer: C) [6 + (261/315)] days Explanation: After day 1, A finishes 1/9 of the work. After day 2, B finishes 1/7 more of the total work. (1/9) + (1/7) is finished. After day 3, C finishes 1/5 more of total work. Total finished is 143/315. So, after day 6, total work finished is 286/315. Now remaining work = 29 /315 On day 7, A will work again Work will be completed on day 7 when A is working. He must finish 29/315 of total remaining work. Since he takes 9 days to finish the total task, he will need 261/315 of the day. Total days required is 6 + (261/315) days.

प्र: A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage? 1675 0

उत्तर : 4. "100/7%"
व्याख्या :
Answer: D) 100/7% Explanation: When profit is calculated on Marked Price (M.P) then, C.P = M.P - P% Let M.P = 100 => C.P = 100 - 30 = 70 But S.P = Rs. 80 as he gave 20% discount, Now, Actual Profit = 80-7070x100 = 100/7 %

प्र: What is the smallest unit that can evolve? 1674 0

उत्तर :
व्याख्या :
The population is the smallest unit of living organisms that can undergo evolution.

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. 1674 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: abcdefghijklmnopqrstuvwxyz Riddle What sentence contains all abcdefghijklmnopqrstuvwxyz? 1673 0

उत्तर :
व्याख्या :
The Quick Brown Fox Jumped Over The Lazy Dog is the sentence which contains all 26 alphabets i.e, from a to z.

प्र: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1673 0

उत्तर : 3. "Rs. 2160"
व्याख्या :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160

प्र: Who won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides ? 1671 0

उत्तर : 2. "Prashant Ranganathan"
व्याख्या :
Answer: B) Prashant Ranganathan Explanation: An Indian boy has won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides. Prashant Ranganathan, a 12th grader from Jamshedpur, alongwith over 20 high school students from various parts of India, participated in the Intel International Science and Engineering Fair.

प्र: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is ? 1675 0

प्र: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 1675 0

प्र: A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage? 1675 0

उत्तर : 4. "100/7%"
व्याख्या :
Answer: D) 100/7% Explanation: When profit is calculated on Marked Price (M.P) then, C.P = M.P - P% Let M.P = 100 => C.P = 100 - 30 = 70 But S.P = Rs. 80 as he gave 20% discount, Now, Actual Profit = 80-7070x100 = 100/7 %

प्र: What is the smallest unit that can evolve? 1674 0

उत्तर :
व्याख्या :
The population is the smallest unit of living organisms that can undergo evolution.

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: abcdefghijklmnopqrstuvwxyz Riddle What sentence contains all abcdefghijklmnopqrstuvwxyz? 1673 0

उत्तर :
व्याख्या :
The Quick Brown Fox Jumped Over The Lazy Dog is the sentence which contains all 26 alphabets i.e, from a to z.

प्र: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1673 0

उत्तर : 3. "Rs. 2160"
व्याख्या :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160

प्र: Who won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides ? 1671 0

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प्र: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is ? 1675 05b5cc6dfe4d2b4197774eac1

प्र: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 1675 05b5cc73de4d2b4197774f94d

प्र: A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage? 1675 05b5cc6bae4d2b4197774d7ad

उत्तर : 4. "100/7%" व्याख्या :Answer: D) 100/7% Explanation: When profit is calculated on Marked Price (M.P) then, C.P = M.P - P% Let M.P = 100 => C.P = 100 - 30 = 70 But S.P = Rs. 80 as he gave 20% discount, Now, Actual Profit = 80-7070x100 = 100/7 %

प्र: What is the smallest unit that can evolve? 1674 05b5cc69de4d2b4197774c8d5

उत्तर : व्याख्या :The population is the smallest unit of living organisms that can undergo evolution.

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: abcdefghijklmnopqrstuvwxyz Riddle What sentence contains all abcdefghijklmnopqrstuvwxyz? 1673 05b5cc6a8e4d2b4197774ce85

उत्तर : व्याख्या :The Quick Brown Fox Jumped Over The Lazy Dog is the sentence which contains all 26 alphabets i.e, from a to z.

प्र: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1673 05b5cc715e4d2b4197774f472

उत्तर : 3. "Rs. 2160" व्याख्या :Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160

प्र: Who won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides ? 1671 05b5cc6dce4d2b4197774e9b0

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: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is ? 1675 0

प्र: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 1675 0

प्र: A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage? 1675 0

उत्तर : 4. "100/7%"
व्याख्या :
Answer: D) 100/7% Explanation: When profit is calculated on Marked Price (M.P) then, C.P = M.P - P% Let M.P = 100 => C.P = 100 - 30 = 70 But S.P = Rs. 80 as he gave 20% discount, Now, Actual Profit = 80-7070x100 = 100/7 %

प्र: What is the smallest unit that can evolve? 1674 0

उत्तर :
व्याख्या :
The population is the smallest unit of living organisms that can undergo evolution.

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: abcdefghijklmnopqrstuvwxyz Riddle What sentence contains all abcdefghijklmnopqrstuvwxyz? 1673 0

उत्तर :
व्याख्या :
The Quick Brown Fox Jumped Over The Lazy Dog is the sentence which contains all 26 alphabets i.e, from a to z.

प्र: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1673 0

उत्तर : 3. "Rs. 2160"
व्याख्या :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160

प्र: Who won the world’s largest pre-college science competition in the US in the environmental engineering category for his project on biodegradation of pesticides ? 1671 0