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Thread: TestFunda Answers - Logical Reasoning

  1. #361
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    Post TestFunda Answers - Logical Reasoning

    Take a2 in the set now a1 and a3 have shaken hands with him.a4 has not so we take a5 in the set thus a4 and a6 have shaken hands with the set but a7 has not so we take a8...thus we leave a gap of two people and select the third person in the set. So answer is 36/3 = 12  

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    Post TestFunda Answers - Logical Reasoning


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    Post TestFunda Answers - Logical Reasoning


    Train travelled for c hrs A minutes == 60C+A mins.

     

    Now, b hr c min - a hr b min = 60C + A mins

     

    60B+C-60A-B = 60C + A

     

    59(B-C) = 61A

     

    A= (59B-59C)/61 

    Train travelled for C hrs A minutes == 60C+A mins.
    Now, B hr C min - A hr B min = 60C + A mins
    60B+C-60A-B = 60C + A
    59(B-C) = 61A
    A= (59B-59C)/61 = (59/61)*(B-C)
    This can be solved only when B-C = 0 or B=C and A=0 
    24such cases can exist
    A=0, B=C=i, where i goes from 1 to 24

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    Post TestFunda Answers - Logical Reasoning

    A hare and tortoise have a race along a circle of diameter 100 yards.the tortoise goes in one direction and Hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely3. A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one direction and the. The hare and tortoise meet when the hare has covered only 1/8 of the distance. By what factor should the hare increase its speed so as to tie the race?

    a) 37.80  b)8  c) 40  d) 5


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    Post TestFunda Answers - Logical Reasoning

    ans is 20
    let peter is 20. acc. to question. 5 years ago for paul(only) , peter is twice that of paul. i.e. 20(10*2)
    hence paul=15,and peter =20

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    Post TestFunda Answers - Logical Reasoning

    a=1+5+9+13+........+73
    no of terms in a=19
    b=3+7+11+15+19...+75
    no of term in b =19
    difference of each term of b and a=2
    so diffference b-a=19*2=38
    hence  (3) is the right choice.....

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    Post TestFunda Answers - Logical Reasoning

    37.80 is the answer. This is already answered. search for detailed discussion.
    Last edited by Rajasekaran; 04-Jan-11 at 8:14 PM.

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    Post TestFunda Answers - Logical Reasoning

    37.80 is the answer. Already answered. Please check for detailed solution

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    Post TestFunda Answers - Logical Reasoning


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    Post TestFunda Answers - Logical Reasoning

    The circle circumference is given by the formula 2∏r or in other words (∏ x diameter) = 100 ∏ yards. Therefore this is the length of the race.

    The tortoise has a 100 ∏ / 5 = 20 ∏ head start
    The hare sets off leisurely and gets 1/8 of the way round ie 1/8 x 100 ∏ = 12.5 ∏ yards when he meets the tortoise. Therefore by the time he has dawdled 12.5 ∏ yards, the tortoise has only to go another 12.5∏ yards to finish. In other words as he has only 12.5 yards to go he must have travelled 100∏ - 12.5∏ yards = 87.5∏ yards. However, as he had a 20∏ yard head start, he has travelled 87.5∏ - 20∏ = 67.5∏ yards in the same time as the hare has gone 12.5∏ yards. Therefore just to go at the same speed as the tortoise, the hare must increase his pace by a factor of 67.5/12.5 = 5.4

    Then on top of this, the tortoise only has 12.5∏ yards to the finish, whilst the hare has 87.5∏ yards to go. Therefore the hare must increase his pace by a factor of 87.5 / 12.5 = 7 to allow for the larger distance to go.

    Therefore to tie the race he must increase his pace by a factor of 5.4 x 7 = 37.80
    Last edited by vimbloid; 04-Jan-11 at 11:33 PM.

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    Post TestFunda Answers - Logical Reasoning

    According to the question,
    For both of them to have an equal chance of winning,
    The probability that a single color pops up on the two dice should be half
    So, Probability (dice 1 is red AND dice 2 is red) + Probability (dice 1 is blue AND dice 2 is blue) = 1/2
    Let the other dice have x red faces
    So, it will have 6-x blue faces
    So, 
    (4/6)*(x/6) + (2/6)*(6-x)/6 = 1/2
    So, x = 3
    Hence, option 1 

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    Post TestFunda Answers - Logical Reasoning

    Paul picks A with the same probability as A’schances of winning
    So probability of picking a winner = prob picking of ghana * ghana winning + prob picking of bolivia * bollivia winning
    = 2/3 * 2/3 + 1/3 * 1/3
    = 5/9 

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    Post TestFunda Answers - Logical Reasoning

    Let O stand for an ordinary coin and G stand for the gold coin
    Initially, 
    O1-O2-G-O3-O4-..-O20

    Suppose Alice does the 1-move. Then,
    O2-O1-G-O3-O4-..-O20

    Then Bob can follow two paths
    1. Bob does a 0-move
    2. Bob does a 2-move or a higher move

    1. If Bob does a 0-move, A cannot do a 1-move or 0-move. So, A would do a 2-move or a higher move. Then,
    O1-G-O3-..-O20
    Bob then cannot do a 0-move. So A wins

    2. If Bob does a 2-move or higher, A would do a 0-move and win!

    So, for A to win, 1-move is the best strategy!

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    Post TestFunda Answers - Logical Reasoning

    Total distance is 100 yards.
    Initially the Tortoise has covered 1/5 of the distance i.e. 20 yards covered.
    Now hare starts and covers 1/8 of the distance to meet the tortoiese.
    1/8 is 12.5 yards. In the same time tortoise has covered 67.5 yards.
    Now relatively calculating thier speeds ratio,
    Tortoise covers 67.5 yards when hare has covered 12.5 yards. 5.4 is factor by which tortoise speed is more than hare currently.
    Hare has to cover 67.5+20 yards, before the tortoise covers the rest 12.5 yards to tie the race. 87.5/12.5 = 7 is the factor he is in need to increase his speed if the tortoise is idle so as to match with the tortoise. 
    But tortoise is moving with the speed of 5.4. Hence he must increase his speed by a factor of 5.4*7 = 37.8

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    Post TestFunda Answers - Logical Reasoning

    in unit's place, the 3's are:
    3, 13, 23 ... 73
    103, 113, 123 ... 173
    ...
    703, 713, .... 773
    => total number of 3's in unit's place is 8*8 = 64
    in 10's place (that's 8 in decimal), the 3's are:
    30, 31, 32... 37
    130, 131, ... 137
    ...
    730, 731, .... 737
    => total number of 3's in 10's place is 8*8 = 64
    in 100's place (that's 64 in decimal), the 3's are:
    300, 301, ... 307
    310, 311 ... 317
    ...
    370, 371 .... 377
    => total number of 3's in 100's place is 8*8 = 64
    thus, the total number of 3's in total is 64 + 64 + 64 = 192

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    Post TestFunda Answers - Logical Reasoning

    Here the data about the distance is of no use.
    For radius of 1 m if dart is inside the circle of 1/2 m radius the dart is closer to center than periphery
    so area of 1/2 m circle is pie/4
    area of board is pie
    So probability = 0.25 

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    Post TestFunda Answers - Logical Reasoning

    Lets say that none of the statements are false
    Then all the statements from 1 to 40 stand true because of the word -> "AT MOST"
    AT MOST is equal to the <= sign 
    Hence, option 2 

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    Post TestFunda Answers - Logical Reasoning

    Three burglars were caught while robbing a home, a bank and a jwellery.
    x says " y had robbed the bank "
    z says " y had robbed the jwellery"
    y says that he is not involved in any of these.
    the one who had robbed the home is speaking truth and the one who had robbed the bank is not. Identify who robbed where?

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    Post TestFunda Answers - Logical Reasoning


    1)Six friends go to pizza corner there r 2 types of pizzas. And six different flavors r there they have to select 2 flavors from 6 flavors. In how many ways we can select?


    2)A pizza parlor provides pizzas...there wer 2 toppings available initially peperoni and salami.but now they,ve introduces 8 new toppings (some names) to select from......a person wishes to buy two DIFFERENT pizzas of NEW topping....in how many ways he can do that??


    3)A girl has to make pizza with different toppings. There are 8 different toppings. In how many ways can she make pizzas with 2 different toppings.


    4) or it is asked how many ways he can arrange them?


    are all same??  what will be ans nCm or nPm?



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