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प्र: Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420 ? 1847 0

उत्तर : 1. "Rs. 2000"
व्याख्या :
Answer: A) Rs. 2000 Explanation: Given, Compound rate, R = 10% per annumTime = 2 yearsC.I = Rs. 420Let P be the required principal.A = (P+C.I)Amount, A = P1 + r100n (P+C.I) = P1 + 101002 (P+420) = P[11/10][11/10] P-1.21P = -420 0.21P = 420 Hence, P = 420/0.21 = Rs. 2000

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1847 0

उत्तर : 1. "8 : 62.5"
व्याख्या :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: A man pays Rs. 6.40 per litre of milk. He adds water and sells the mixture at Rs. 8 per litre, thereby making 37.5% profit. The proportion of water to milk received by the customers is 1846 0

उत्तर : 1. "1 : 10"
व्याख्या :
Answer: A) 1 : 10 Explanation: Customer ratio of Milk and Water is given by Milk :: Water 6.4 0 81 + 38 =6411 6411 6410 - 6411 => Milk : Water = 110 : 11 = 10 : 1 Therefore, the proportionate of Water to Milk for Customer is 1 : 10

प्र: Find the Missing number in the given Series ? 2, 3, 6, 15, ? , 157.5 1845 0

उत्तर : 4. "45"
व्याख्या :
Answer: D) 45 Explanation: Here given 2, 3, 6, 15, ? , 157.5 2 x 1.5 = 3 3 x 2 = 6 6 x 2.5 = 15 15 x 3 = 45 45 x 3.5 = 157.5 Therefore, the missing number is 45

प्र: What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high ? 1845 0

उत्तर : 1. "13 m"
व्याख्या :
Answer: A) 13 m Explanation: The length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high is => d2 = 122 + 42 + 32 = 13mts.

प्र: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ? 1845 0

उत्तर : 1. "240 mts"
व्याख्या :
Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.

प्र: [(24)2+(27)2]÷? = 9.0625 1842 0

उत्तर : 2. "144"
व्याख्या :
Answer: B) 144 Explanation:

प्र: Two letters are randomly chosen from the word TIME. Find the probability that the letters are T and M? 1842 0

प्र: Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420 ? 1847 05b5cc701e4d2b4197774f17a

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1847 05b5cc6c7e4d2b4197774de9b

उत्तर : 1. "8 : 62.5" व्याख्या :Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: A man pays Rs. 6.40 per litre of milk. He adds water and sells the mixture at Rs. 8 per litre, thereby making 37.5% profit. The proportion of water to milk received by the customers is 1846 05b5cc6afe4d2b4197774d25e

उत्तर : 1. "1 : 10" व्याख्या :Answer: A) 1 : 10 Explanation: Customer ratio of Milk and Water is given by Milk :: Water 6.4 0 81 + 38 =6411 6411 6410 - 6411 => Milk : Water = 110 : 11 = 10 : 1 Therefore, the proportionate of Water to Milk for Customer is 1 : 10

प्र: Find the Missing number in the given Series ? 2, 3, 6, 15, ? , 157.5 1845 05b5cc6bce4d2b4197774d8ac

उत्तर : 4. "45" व्याख्या :Answer: D) 45 Explanation: Here given 2, 3, 6, 15, ? , 157.5 2 x 1.5 = 3 3 x 2 = 6 6 x 2.5 = 15 15 x 3 = 45 45 x 3.5 = 157.5 Therefore, the missing number is 45

प्र: What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high ? 1845 05b5cc6e5e4d2b4197774ed1f

उत्तर : 1. "13 m" व्याख्या :Answer: A) 13 m Explanation: The length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high is => d2 = 122 + 42 + 32 = 13mts.

प्र: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ? 1845 05b5cc6d6e4d2b4197774e651

उत्तर : 1. "240 mts" व्याख्या :Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.

प्र: [(24)2+(27)2]÷? = 9.0625 1842 05b5cc7c8e4d2b41977750e31

उत्तर : 2. "144" व्याख्या :Answer: B) 144 Explanation:

प्र: Two letters are randomly chosen from the word TIME. Find the probability that the letters are T and M? 1842 05b5cc6ade4d2b4197774d10e

उत्तर : 2. "1/6" व्याख्या :Answer: B) 1/6 Explanation: Required probability is given by P(E) = n(E)n(S) = 14C2 = 16

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प्र: Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420 ? 1847 0

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1847 0

उत्तर : 1. "8 : 62.5"
व्याख्या :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: A man pays Rs. 6.40 per litre of milk. He adds water and sells the mixture at Rs. 8 per litre, thereby making 37.5% profit. The proportion of water to milk received by the customers is 1846 0

उत्तर : 1. "1 : 10"
व्याख्या :
Answer: A) 1 : 10 Explanation: Customer ratio of Milk and Water is given by Milk :: Water 6.4 0 81 + 38 =6411 6411 6410 - 6411 => Milk : Water = 110 : 11 = 10 : 1 Therefore, the proportionate of Water to Milk for Customer is 1 : 10

प्र: Find the Missing number in the given Series ? 2, 3, 6, 15, ? , 157.5 1845 0

उत्तर : 4. "45"
व्याख्या :
Answer: D) 45 Explanation: Here given 2, 3, 6, 15, ? , 157.5 2 x 1.5 = 3 3 x 2 = 6 6 x 2.5 = 15 15 x 3 = 45 45 x 3.5 = 157.5 Therefore, the missing number is 45

प्र: What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high ? 1845 0

उत्तर : 1. "13 m"
व्याख्या :
Answer: A) 13 m Explanation: The length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high is => d2 = 122 + 42 + 32 = 13mts.

प्र: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train ? 1845 0

उत्तर : 1. "240 mts"
व्याख्या :
Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.

प्र: [(24)2+(27)2]÷? = 9.0625 1842 0

उत्तर : 2. "144"
व्याख्या :
Answer: B) 144 Explanation:

प्र: Two letters are randomly chosen from the word TIME. Find the probability that the letters are T and M? 1842 0

उत्तर : 2. "1/6"
व्याख्या :
Answer: B) 1/6 Explanation: Required probability is given by P(E) = n(E)n(S) = 14C2 = 16