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नवीनतमलोकप्रियमूल्यांकनपेज देखें 228 of 493कुल सवाल 3944 जॉइन Examsbook

प्र: Bind it and it walks, Loose it and it stops. What is it? 2346 0

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उत्तर :
व्याख्या :

A Sandal. It has sticking strips to make them fit for our feet. If you bind them only you can start walking or other wise it comes out.

प्र: A class has 8 football players. A 5-member team and a captain will be selected out of these 8 players. How many different selections can be made ? 2345 0

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    210
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  • 2
    168
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  • 3
    1260
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  • 4
    10!/6!
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उत्तर : 2. "168"
व्याख्या :

Answer: B) 168 Explanation: we can select the 5 member team out of the 8 in 8C5 ways = 56 ways. The captain can be selected from amongst the remaining 3 players in 3 ways. Therefore, total ways the selection of 5 players and a captain can be made = 56x3 = 168 ways.   (or)   Alternatively, A team of 6 members has to be selected from the 8 players. This can be done in 8C6 or 28 ways. Now, the captain can be selected from these 6 players in 6 ways. Therefore, total ways the selection can be made is 28x6 = 168 ways.

प्र: A train covers 180 km distance in 5 hours. Another train covers the same distance in 1 hour less. What is the difference in the distances covered by these trains in one hour if they are moving in the same direction? 2345 0

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    15 kms
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  • 2
    9 kms
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  • 3
    6 kms
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  • 4
    18 kms
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उत्तर : 2. "9 kms"
व्याख्या :

Answer: B) 9 kms Explanation: The first train covers 180 kms in 5 hrs => Speed = 180/5 = 36 kmph Now the second train covers the same distance in 1 hour less than the first train => 4 hrs => Speed of the second train = 180/4 = 45 kmph Now, required difference in distance in 1 hour = 45 - 36 = 9 kms.

प्र: Derivative of sinx by first principle? 2345 0

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    -sinx
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  • 2
    -cosx
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  • 3
    cosx
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  • 4
    sinx
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उत्तर : 3. "cosx"
व्याख्या :

Answer: C) cosx Explanation:   Thus, the derivative of sinx by first principle is cosx.

प्र: Which revolutionary died after a 64 days fast in jail? 2344 0

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    Jatin Das
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  • 2
    Pulin Das
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  • 3
    Subhash Chandra bose
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  • 4
    Both A & B
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उत्तर : 1. "Jatin Das"
व्याख्या :

Answer: A) Jatin Das Explanation: Jatindra Nath Das, also known as Jatin Das, was a revolutionary and Independence activist. He embraced death in Lahore jail after fasting for 64 days in 1929 at the age of 24 yrs.

प्र: A man covers half of his journey by train at 60 km/hr, half of the remaining by bus at 30 km/hr and the rest by cycle at 10 km/hr. Find his average speed during the entire journey? 2344 0

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    32 kmph
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  • 2
    20 kmph
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  • 3
    18 kmph
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  • 4
    24 kmph
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उत्तर : 4. "24 kmph"
व्याख्या :

Answer: D) 24 kmph Explanation: Let the total distance of the journey of a man = d kms Now, the average speed of the entire journey = dd120 + d120 + d40  = 24 kmph.

प्र: If it is possible to make a number which is the square of a two-digit odd number using the second, the fourth and the sixth digits of the number  93217648 and using each only once, which of the following is that two-digit odd number? 2343 0

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    17
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  • 2
    19
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  • 3
    15
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  • 4
    21
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उत्तर : 2. "19"
व्याख्या :

Answer: B) 19 Explanation: Second, fourth and the sixth digits of the number are 3, 1 and 6. Using these digits only once we can make 361, which is a perfect square number. Hence, our answer is 19 x 19 = 361

प्र: Statement: A large number of students who have passed their XII Std. terminal examination in the country could not get admission to colleges as the number of seats available are grossly inadequate.Courses of action:a. The evaluation system of XII Std. terminal examination should be made more tough so that fewer students pass the examination.b. The Government should encourage the private sector to open new colleges by providing them land at cheaper rate.c. The rich people should be asked to send their wards to foreign countries for higher studies enabling the needy students to get admission in colleges within the country. 2342 0

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    only a and b follows
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  • 2
    Only c follows
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  • 3
    Only b follows
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  • 4
    All a, b & c follows
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उत्तर : 3. "Only b follows"
व्याख्या :

Answer: C) Only b follows Explanation: Clearly, reducing the number of aspirants for admission to colleges or sending the students of well-to-do families to foreign countries for higher studies, is no proper solution. So, both I and III do not follow. The right solution is to increase the number of colleges so as t accommodate the increasing number of admission-seekers. So, only II follows.

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