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Thread: TestFunda Answers - Higher Maths

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    Post TestFunda Answers - Higher Maths

    At 11 am k has travelled 100 kms and r is to start. At 4pm k has overall travelled 225 km and r has travelled 150 kms and a is to start. Let they meet after t hours. Then their distance will be equal. Hence 40t=30t+150. Hence t=15

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    Post TestFunda Answers - Higher Maths







    At 11 am k has travelled 100 kms and r is to start.
    At 4pm k has overall travelled 225 km and r has travelled 150 kms and a is to start.
    Let they meet after t hours.
    Then their distance will be equal.
    Hence 40t=30t+150.
    Hence t=15  


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    Post TestFunda Answers - Higher Maths

    There are 9 seats in a row 3 persons take seats at random.what is the probability that the middle seat is always occupied and no two persons are sitting on consecutive seats?

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    Post TestFunda Answers - Higher Maths

    what is the number of consecutive zeroes at the end of 3125^4!  ?? how to do such sums ??

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    Post TestFunda Answers - Higher Maths

    X is set of 3 digit divisors that leaves same remainder when it divides12714 and 13714. what is the max possible number of elements
    Options
    1) 
    8
    2) 
    1
    3) 
    6
    4) 
    7
    Additional Notes: i read the solution as 3 digit factors of (13714-12714). but i dont get the relation/concept behind it. pls explain, so that i can solve other questions,if, based on this

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    Post TestFunda Answers - Higher Maths

    a bookshelve contains n books. if the books in bookshelf are divided into groups of 9, 2 are left and if the books are divided into groups of 11, 7 are left. if the max capacity of the bookshelf is 1000. how many values of n are possible
    Options
    1) 
    10
    2) 
    11
    3) 
    13
    4) 
    15

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    Post TestFunda Answers - Higher Maths

    A milkman has 10 Litres of milk left with him.He decided to sell it at Rs 10 per Litre(His cost price) such that each time after selling one litre of it he adds some water to it.Thus,first time when he sells one litre of milk after adding water he makes 10 % profit,second time he makes 20 % profit so on.find the approximate amount of water in the milk he has,before he sells the milk for third timr.

    1)1825 ml   2)2427 ml    3)2829 ml    4) 6600 ml 
    Options
    1) 
    1825 ml
    2) 
    2427 ml
    3) 
    2829 ml
    4) 
    6600 ml

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    Post TestFunda Answers - Higher Maths

    Suppose 3 digit number is n

    12714=nx + r
    13714=ny+r 
    Subtracting
    1000=n(y-x)
    y-x must be greater than zero and integer
    so, taking y-x =1,2,4,5,8,10 and calculating n,
    1000,500,250,200,125,100
    no of values =6

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    Post TestFunda Answers - Higher Maths

    linda>chelsey
    linda>julia
    so linda is the tallest, but we don't know who is the tallest between julica and chelsey  

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    Post TestFunda Answers - Higher Maths

    If all the first 150 multiples of 3 are placed side by side then Find the sum of the digits of the number so formed

    how to find this quickly

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    Post TestFunda Answers - Higher Maths

    The probability that a randomly chosen positive divisor of 1029 is an integral multiple of 1023 is: a2/b2. Then "a-b" would be?
    Options
    1) 
    8
    2) 
    15
    3) 
    23
    4) 
    21
    Additional Notes: Please provide detailed solution. I have one solution available that I found on net, but I am unable to decipher that solution.

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    Post TestFunda Answers - Higher Maths

    Remainder when a digit is repeated p-1 times is divisible by p.Therefore 5 repeated 6 times is divisible by 7 nd 5 repeated 18 times is divisible by 19.Therefore 5 repeated 18k times is divisible by 19*7=133.Therefore 5 repeated 90 times is divisible by 133.Therefore R(5555....98 times)/133=R(55555555)/133.This is =125

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    Post TestFunda Answers - Higher Maths

    A and B run a race with their speeds in the ratio of 5 : 3. They prefer to run on a circular track of circumference 1.2 km. What is the distance covered by A when she passes B the seventh time?
    Additional Notes: Post your OA with Approach

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    Post TestFunda Answers - Higher Maths

     A and B start simultaneously in opposite directions covering a circular track of length 2100m. A - 7m/s and B - 3m/s initially. With every meeting, they exchange their speeds and they meet a total of 10 times. How much distance does B cover?
    Additional Notes: Post OA with approach

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