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Numbers Test 29
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Numbers Test 29
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  • Question 1/10
    1 / -0

    What is the number if 60% of it added to 60 gives the number itself ?

    Solutions

    Explanation :

    From ans…150

    40% of numb = 60

    60% of 150 = 90

    90+60 = 150

     

  • Question 2/10
    1 / -0

    (6084)1/2  = ?

  • Question 3/10
    1 / -0

    9/16 of a number is 51 greater than 50% of the number, then the number is.

    Solutions

    Explanation :

    (9x/16)-(x/2) = 51

    X = 51*16 = 816

     

  • Question 4/10
    1 / -0

    The sum of the number and its square is 1406. What is the number ?

    Solutions

    Explanation :

    See the last digit 06…..go for 7

    Last digit ..37+(37*37) = 7+49 = 16

    So ans: 37

     

  • Question 5/10
    1 / -0

    The number is 0.01 is how many times as great as the number (0.0001)2 

    Solutions

    Explanation :

    0.01 = 10^-2

    (0.0001)2 = 10^-8

    10^-2/10^-8 = 10^6

     

  • Question 6/10
    1 / -0

    In a bag there are coins of 25 paise and 10 paise in the ratio of 5:16. If the bag contains Rs.16 then the number of 10 paise coin is ?

    Solutions

    Explanation :

    25*5+10*16 = 285

    Rs 16 = 1600

    No of 10p = 1600*16/285  = 89.82 = 90

     

  • Question 7/10
    1 / -0

    a+b = c and abc = 30, then what is the value of a^3 + b^3 – c^3 ?

    Solutions

    Explanation :a^3 + b^3 – c^3 = -3(abc) = -3(30) = -90

     

  • Question 8/10
    1 / -0

    a^2 + b^2 + c^2 = ab + bc + ca then the value of (a+b)/(b+c) is ?

    Solutions

    Explanation :

    Equation will be satisfied when a=b=c=1

    (a+b)/c = (1+1)/(1+1) = 2/2 = 1

     

  • Question 9/10
    1 / -0

    (a-b) = 1, (b-c) = 2 and (c-a) = 3 then the value of (a3+b3+c3-3abc)/(a+b+c) is.

    Solutions

    Explanation :

    (a3+b3+c3-3abc)/(a+b+c) =1/2[(a-b)2+(b-c)2+(c-a)2] = ½(1+4+9) = 14/2 = 7

     

  • Question 10/10
    1 / -0

    If *=+, /=-, + = *, – = / then 43*561+500-100/10 = ?

    Solutions

    Explanation :

    43*561+500-100/10 = 43+561*500/100-10 = 43+561*5-10

    = 43+2805-10 =2838

     

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