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RRB NTPC 2021 CBT-2 Mix Test - 116
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RRB NTPC 2021 CBT-2 Mix Test - 116

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  • Question 1/10
    1 / -0.33

    The traffic lights at 3 different road crossings change after every 48 sec, 72 sec and 108 sec respectively. If they all change simultaneously at 8:20 am, then what time they will again change simultaneously

    Solutions

    LCM OF 48,72 AND 108=432 sec

    =7min and 12 sec

    So answer is 8:20 + 7m 12 sec

    =8:27 am

     

  • Question 2/10
    1 / -0.33

    Directions For Questions

    Direction: A soft drink company prepares drinks of three different flavours - A, B and C. The production of three flavours over a period of six years has been expressed in the bar graph provided below.

    Production of Three Different Flavours A, B and C by a Company over the years (in lakh bottles)

    ...view full instructions

    What is the difference between the average production of flavour A in 2010, 2011 and 2012 and the average production of flavour B in 2013, 2014 and 2015?

    Solutions

    Average production of flavour A in 2010, 2011 and 2012

    = 1/3 x (50 + 40 + 55)

    = 145/3 lakh bottles

    Average production of flavour B in 2013, 2014 and 2015 

    = 1/3 x (55+50+55)

    = 160/3 lakh bottles

    ∴ Difference = 160/3-145/3

    = 15/3 = 5

    Thus 5 lakh bottles = 5,00,000 bottles

     

  • Question 3/10
    1 / -0.33

    Which of the following constitutional amendment lowered the voting age from 21 to 18 years:

    Solutions

    * 61nd amendment act lowered the voting age from 21 to 18 years.

    * 61nd amendment act was acted in 1989.

    * 42th amendment was so wide that it is called as mini constitution.

    * By 91st amendment act total number of ministers was restricted to 15% of total members of the house of people.

    * By 73rd amendment act Panchayati Raj institution was given constitutional status.

     

  • Question 4/10
    1 / -0.33

    Lalita’s father is married to Sarita’s mother. Lalita has two daughters- Priya and Gauri. Sarita has two sons- Atul and Rakesh. Vivek is the father of Priya and Mangesh is the father of Rakesh. How father of Lalita is related to the father of Atul?

    Solutions

    The information given in the question can be depicted in the diagram given below:

    Since, Mangesh is the father of Rakesh then Mangesh is also the father of Atul.

    Therefore, from the diagram we can see that father of Lalita is the father-in-law of father of Atul.

     

  • Question 5/10
    1 / -0.33

    Select the option that is related to the third number in the same way as the second number is related to the first number.

    3 : 30 :: 4 : ?

    Solutions

    As

     

  • Question 6/10
    1 / -0.33

    Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(S) from the statements.

    Statements:

    No Cycle is Bike.

    No Bike is Car.

    Some Cycle is Car.

    Conclusion:

    I. No car is Cycle.

    II. No car is bike.

    III. Some Cycle are bike.

    IV. All car are Bike.

    Solutions

    NO car is Cycle. This is not true case so conclusion I does not follow.

    NO car is bike. This is true case so conclusion II follows.

    Some Cycle are bike. This is not true case so conclusion III does not follow.

    All car are bike. This is not true case so conclusion IV does not follow.

     

  • Question 7/10
    1 / -0.33

    Average runs scored by the 11 players of a cricket team is 27 runs. If one of the players scores 137 runs, find the average of remaining players?

    Solutions

    In this question we have to find out average of remaining ten players.

    Given- Average runs scored by cricket team is 27

    Total runs scored by all the players = 27×11= 297 (total no. of players in cricket team is eleven)

    Score of first player = 137 (given)

    ⇒ total score of remaining ten players = 297-137 =160

    ⇒ average of remaining ten players = 160/10 = 16 runs

     

  • Question 8/10
    1 / -0.33

    In a row of girls Janvi is 5th from the start and 12th from the end. In other row of girls, Varsha is 9th from the start. And 11th from the end .How many girl are there in both the rows together?

    Solutions

    Total number of girls in both the rows.

    = (number of girls in Janvi’s row) + (number of row in Varsha’s row)

    = (4+1+11) + (8+1+10)

    = 16 + 19 = 35

     

  • Question 9/10
    1 / -0.33

    Which of the following is the site of cellular respiration?

    Solutions

    ● Mitochondria is the site of cellular respiration.

    ● They are rod-shaped organelles that can be considered the power generators of the cell, converting oxygen and nutrients into adenosine triphosphate.

    ● They are located in the cytoplasm of cells along with other organelles of the cell.

     

  • Question 10/10
    1 / -0.33

    Some toffees are bought at the rate of 11 for Rs. 10and the same number of toffee at the rate of 9 for Rs. 10. If the whole lot is sold at one rupee per toffee, find the gain or loss %.

    Solutions

    Let 99 toffees (LCM of 11 and 9) of each type be bought.

    11 toffees were bought for Rs. 10

    So, 99 toffees will be bought for = 9 x 10 = Rs.90

    And,

    9 toffees were bought for Rs. 10

    So, 99 toffees will be bought for = 11 x 10 = Rs.110

    ∴ C.P. of the 198 toffees = 90 + 110 

    = 90 + 110 = Rs. 200

    S.P. = Rs. 198

    ∴ Loss percent = (2/200) × 100 = 1%

     

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