General Aptitude - 2

• What is my father's son's son to my son?
  Either brother or cousin
• If a person bought a cycle before 2days of his birthday and he broke it after 3 days of his birthday . The day he broke is Mar2, 1956. Then find when is his birthday?
  Since it was a leap year so february was of 29 days. 3 days back from 2nd march is 28 february.
• In a class 80% have passed English,70% passed Hindi 10% didn't passed either. If 144 students passed both. What is the total strength of the class ?
  let x be total no of students passed
  0.7x+0.8x-144=x
  hence 0.5x=144
  hence x=288
  let y be total students
  so y=0.1y+288so 0.9y=288hence y=320
  [Not sure about the answer. So please verify at your end too.]
• If a die is thrown twice what is the probability that you get same number ?
  No matter how many times you throw the dice, the probability of getting the same number is 1/6 always.
• If the sum of two consecutive numbers is 55, then find out the larger number?
  The larger number is 28.
  Method
  Let x be the number.
  (x)+(x+1)=55
  2x=54
  x=27
  Therfore larger number is 28
• Two trains A&B start at opposite points 120km at 60kmph. A fly starting along with train A at 120kmph reaches B then returns back to touch and continue. By the time two trains meet how much distance the fly would have traveled?
  If you know the answer, then please post it in comments of this post.
• How many tangents can be drawn with in three circles if they do not lie with in each other ?
  If you know the answer, then please post it in comments of this post.