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प्र: At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other? A. 5111 B. 15415 C. 16411 D. 4415 1992 0

उत्तर : 3. "Option C"
व्याख्या :
Answer: C) Option C Explanation: At 3 o'clock, the minute hand is 15 min. spaces apart from the hour hand. To be coincident, it must gain 15 min. spaces. 55 min. are gained in 60 min. Then 15 min spaces are gained in = 6055×15 min. Therefore, The hands are coincident at 16411 min. past 3 o'clock.

प्र: If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain ? 1990 0

उत्तर : 1. "25%"
व्याख्या :
Answer: A) 25% Explanation: He has gain = 15 - 12 = 3,Gain% = (3/12) x 100 = (100/4) = 25.He has 25% gain.

प्र: Find the Odd One Out? 3, 4, 14, 48, 576, 27648 1988 0

उत्तर : 2. "14"
व्याख्या :
Answer: B) 14 Explanation: Given Number series is : 3 4 14 48 576 27648 It follows a pattern that, 3 4 4 x 3 = 12 but not 14 12 x 4 = 48 48 x 12 = 576 576 x 48 = 27648 Hence, the odd one in the given Number Series is 14.

प्र: 1397 x 1397 = ? Here what replaces '?' 1985 0

उत्तर : 1. "1951609"
व्याख्या :
Answer: A) 1951609 Explanation: 1397 x 1397

प्र: A batsman scored 180 runs which included 11 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets ? 1985 0

उत्तर : 3. "48.88%"
व्याख्या :
Answer: C) 48.88% Explanation: Number of runs made by running = 180 - (11 x 4 + 8 x 6)= 180 - (92)= 88Now, we need to calculate 88 is what percent of 180.⇒88180×100 = 48.888%.

प्र: K is 4 times as fast as L and working together, they can complete a work in 24 days. In how many days can L alone complete the work ? 1983 0

उत्तर : 1. "30 days"
व्याख्या :
Answer: A) 30 days Explanation: Given K=4L -->K+L = 4L+L = 5L These 5L people can complete the work in 24 days, which means L alone can do the work in (24 x 5)=120 days. Hence, K alone can do the work in 120/4= 30 days.

प्र: The sides of a right-angled triangle are 12 cm, 16 cm, 20 cm respectively. A new right angle Δ is made by joining the midpoints of all the sides. This process continues for infinite then calculate the sum of the areas of all the triangles so made. 1981 0

उत्तर : 2. "128 sq.cm"
व्याख्या :
Answer: B) 128 sq.cm Explanation: Area = = 96 Sum of Area =

प्र: A man can row upstream at 16 km/hr and downstream at 24 km/hr. Find the speed of the current. 1978 0

प्र: At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other? A. 5111 B. 15415 C. 16411 D. 4415 1992 05b5cc77ae4d2b41977750133

प्र: If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain ? 1990 05b5cc74fe4d2b4197774fb12

उत्तर : 1. "25%" व्याख्या :Answer: A) 25% Explanation: He has gain = 15 - 12 = 3,Gain% = (3/12) x 100 = (100/4) = 25.He has 25% gain.

प्र: Find the Odd One Out? 3, 4, 14, 48, 576, 27648 1988 05b5cc6b0e4d2b4197774d2c6

उत्तर : 2. "14" व्याख्या :Answer: B) 14 Explanation: Given Number series is : 3 4 14 48 576 27648 It follows a pattern that, 3 4 4 x 3 = 12 but not 14 12 x 4 = 48 48 x 12 = 576 576 x 48 = 27648 Hence, the odd one in the given Number Series is 14.

प्र: 1397 x 1397 = ? Here what replaces '?' 1985 05b5cc6bbe4d2b4197774d853

उत्तर : 1. "1951609" व्याख्या :Answer: A) 1951609 Explanation: 1397 x 1397

प्र: A batsman scored 180 runs which included 11 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets ? 1985 05b5cc75ce4d2b4197774fc4d

उत्तर : 3. "48.88%" व्याख्या :Answer: C) 48.88% Explanation: Number of runs made by running = 180 - (11 x 4 + 8 x 6)= 180 - (92)= 88Now, we need to calculate 88 is what percent of 180.⇒88180×100 = 48.888%.

प्र: K is 4 times as fast as L and working together, they can complete a work in 24 days. In how many days can L alone complete the work ? 1983 05b5cc774e4d2b4197775003e

उत्तर : 1. "30 days" व्याख्या :Answer: A) 30 days Explanation: Given K=4L -->K+L = 4L+L = 5L These 5L people can complete the work in 24 days, which means L alone can do the work in (24 x 5)=120 days. Hence, K alone can do the work in 120/4= 30 days.

प्र: The sides of a right-angled triangle are 12 cm, 16 cm, 20 cm respectively. A new right angle Δ is made by joining the midpoints of all the sides. This process continues for infinite then calculate the sum of the areas of all the triangles so made. 1981 05b5cc6b7e4d2b4197774d62e

उत्तर : 2. "128 sq.cm" व्याख्या :Answer: B) 128 sq.cm Explanation: Area = = 96 Sum of Area =

प्र: A man can row upstream at 16 km/hr and downstream at 24 km/hr. Find the speed of the current. 1978 05b5cc6bde4d2b4197774d942

उत्तर : 1. "4 kmph" व्याख्या :Answer: A) 4 kmph Explanation: Speed of the current = 24-16/2 = 8/2 = 4 km/hr.

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प्र: At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other? A. 5111 B. 15415 C. 16411 D. 4415 1992 0

प्र: If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain ? 1990 0

उत्तर : 1. "25%"
व्याख्या :
Answer: A) 25% Explanation: He has gain = 15 - 12 = 3,Gain% = (3/12) x 100 = (100/4) = 25.He has 25% gain.

प्र: Find the Odd One Out? 3, 4, 14, 48, 576, 27648 1988 0

उत्तर : 2. "14"
व्याख्या :
Answer: B) 14 Explanation: Given Number series is : 3 4 14 48 576 27648 It follows a pattern that, 3 4 4 x 3 = 12 but not 14 12 x 4 = 48 48 x 12 = 576 576 x 48 = 27648 Hence, the odd one in the given Number Series is 14.

प्र: 1397 x 1397 = ? Here what replaces '?' 1985 0

उत्तर : 1. "1951609"
व्याख्या :
Answer: A) 1951609 Explanation: 1397 x 1397

प्र: A batsman scored 180 runs which included 11 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets ? 1985 0

उत्तर : 3. "48.88%"
व्याख्या :
Answer: C) 48.88% Explanation: Number of runs made by running = 180 - (11 x 4 + 8 x 6)= 180 - (92)= 88Now, we need to calculate 88 is what percent of 180.⇒88180×100 = 48.888%.

प्र: K is 4 times as fast as L and working together, they can complete a work in 24 days. In how many days can L alone complete the work ? 1983 0

उत्तर : 1. "30 days"
व्याख्या :
Answer: A) 30 days Explanation: Given K=4L -->K+L = 4L+L = 5L These 5L people can complete the work in 24 days, which means L alone can do the work in (24 x 5)=120 days. Hence, K alone can do the work in 120/4= 30 days.

प्र: The sides of a right-angled triangle are 12 cm, 16 cm, 20 cm respectively. A new right angle Δ is made by joining the midpoints of all the sides. This process continues for infinite then calculate the sum of the areas of all the triangles so made. 1981 0

उत्तर : 2. "128 sq.cm"
व्याख्या :
Answer: B) 128 sq.cm Explanation: Area = = 96 Sum of Area =

प्र: A man can row upstream at 16 km/hr and downstream at 24 km/hr. Find the speed of the current. 1978 0

उत्तर : 1. "4 kmph"
व्याख्या :
Answer: A) 4 kmph Explanation: Speed of the current = 24-16/2 = 8/2 = 4 km/hr.