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नवीनतमलोकप्रियमूल्यांकनपेज देखें 67 of 493कुल सवाल 3944 जॉइन Examsbook

प्र: Sripad has scored average of 65 marks in three objects. In no subjects has he secured less than 58 marks. He has secured more marks in Maths than other two subjects. What could be his maximum score in Maths ? 1773 0

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    79
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    77
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    76
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    73
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उत्तर : 1. "79"
व्याख्या :

Answer: A) 79 Explanation: Assuming Sripad has scored the least marks in subject other than science,Then the marks he could secure in other two are 58 each.Since the average mark of all the 3 subject is 65.i.e (58+58+x)/3 = 65116 + x = 195x = 79 marks. Therefore, the maximum marks he can score in maths is 79.

प्र: Question : In a cricket team, the average age of eleven players in 28 years. What is the age of the captain? Statements : a. The captain is eleven years older than the youngest player. b. The average age of 10 players, other than the captain is 27.3 years. c. Leaving aside the captain and the youngest player, the average ages of three groups of three players each are 25 years, 28 years and 30 years respectively. 2347 0

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    All a,b and c follows
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    Only a and c follows
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    Either b alone or a & b follows
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    None
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उत्तर : 3. "Either b alone or a & b follows"
व्याख्या :

Answer: C) Either b alone or a & b follows Explanation: From statement (b)Average of 11 players = 11 x 28 = 308Average of 10 players = 10 x 27.3 = 273Age of captain = 308 - 273 = 35. From the Statement (a) we can say that captain's age (C) = y + 11 ...(1) where y-youngers ageFrom the statement (c),the averge age of 3groups of 3players each was given,It means total 9 players age was given indirectly,1st group: 25 x 3 = 752nd group: 28 x 3 = 843rd group: 30 x 3 = 90Total  is 75 + 84 + 90 = 249Now {C + Y + (9 players age sum)}/11 = 28Y + 11 + Y + (249) = 28 x 11=3082Y+260=3082Y = 308-260 = 40 ==> Y=24 ==> C(captain's age)= Y+11 = 24+11 = 35 Therefore, statement b alone or a & c only is the answer.

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 ? 1650 0

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    25%
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    30%
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    17%
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    19%
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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: What is the smallest number by which 2880 must be divided in order to make it into a perfect square ? 1543 0

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    4
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    5
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उत्तर : 4. "5"
व्याख्या :

Answer: D) 5 Explanation: By trial and error method, we get2880/3 = 960 is not a perfect square2880/4 = 720 is not a perfect square2880/5 = 576 which is perfect square of 24Hence, 5 is the least number by which 2880 must be divided in order to make it into a perfect square.

प्र: Who became the fastest bowler to get to 250 wickets in the test matches ? 1772 0

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    K. Rabada
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    R. Ashwin
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    T G Southee
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    Jadeja
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उत्तर : 2. "R. Ashwin"
व्याख्या :

Answer: B) R. Ashwin Explanation: Indian Cricket team off-spin specialist Ravichandran Ashwin has become the fastest cricketer to take 250 wickets in the Test matches. Ashwin surpassed Australian fast bowler Dennis Keith Lillee to reach the milestone of 250 Test wicket. Thus Ravichandran Ashwin has become the sixth Indian bowler to reach 250 test wickets.

प्र: (3x + 2) (2x - 5) = ax² + kx + n. What is the value of  a - n + k ? 1672 0

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    4
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    1
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    5
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    3
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उत्तर : 3. "5"
व्याख्या :

Answer: C) 5 Explanation: (3x + 2) (2x - 5) = ax2+kx+n ...............(1)   But (3x + 2)(2x - 5) = 6x2-11x-10........(2)   so by comparing (1) & (2),   we get a= 6, k= -11 , n= -10   (a - n + k) = 6 + 10 - 11 = 5.

प्र: In a race of 200 m, A can beat B by 31 m and C by 18 m. In a race of 350 m, C will beat B by ? 1358 0

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    25 m
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    21 m
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    22 m
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    19 m
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उत्तर : 1. "25 m"
व्याख्या :

Answer: A) 25 m Explanation: A:B = 200 : 169A:C = 200 : 182 CB = CA×AB    182200×200169   => 182:169   When C covers 182 m , B Covers 169 mWhen C covers 350 m , B Covers 169182×350=> 325 m       So C beats B by (350 - 325) = 25 m.

प्र: Fill in the blank with an appropriate word from the following options. Usually the room tariff in this hotel is higher. At present, it is low because of the------- season. 1838 0

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    Peak
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    Off
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    Down
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    Slow
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उत्तर : 2. "Off"
व्याख्या :

Answer: B) Off Explanation: Season can be either at peak or off.Presently it is low, that is because of OFF season.

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