Sunday 18 August 2013

Elitmus Questions With Solutions: Aptitude-9

41. How many positive integers are there that are not larger than 1000 and are neither perfect squares nor perfect cubes?





42. There are 9 players including Mic and Jordan standing in a row. What is the probability of being 2 or less players between Mic and Jordan?





43. If the decimal number 120 when expressed to the base a,b and c equals 60,80,100 respectively, then which of the following statement is true?
a) a,b,c are in geometric progression
b) a,b,c are in arithmetic progression
c) a,b,c are in harmonic progression
d) a-b-c=1





44. If a=b*c then  for any value of n, the equation  (a-b)^n-(c-b)^n+c^n is always divisible by
a) bc
b) b but not c always
c)c but not b always
d)non of above




45. A and B pick up a ball at random from a bag containing M red, N yellow and O green balls one after the other, replacing the ball every time till one of them gets a red ball.The first one to get the red ball is declared as the winner.If A begins the game and the odds of his winning the game are 3 to 2, then find the ration M:N.






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2 comments:

  1. please elaborate solution to question no 43

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  2. In the solution given their, first the base is calculated i.e. a,b,c in this case. Then we check for the option which satisfies the calculated values of a,b,c...

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