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MCQs

Total Questions : 72 | Page 4 of 8 pages
Question 31. A lady gives a dinner party to six quests. The number of ways in which they may be selected from among ten friends, if two of the friends will not attend the party together is
  1.    112
  2.    140
  3.    164
  4.    None of these
 Discuss Question
Answer: Option B. -> 140




Question 32. If x is very large and n is a negative integer or a proper fraction, then an approximate value of ((1 + X) / x )n is
  1.    1 + x / n
  2.    1 + n / x
  3.    1 + 1 / x
  4.    n(1 + 1 / x)
 Discuss Question
Answer: Option B. -> 1 + n / x




Question 33. A man can hit the target once in four shots. If he fires four shots in succession, what is the probability that he will hit the target?
  1.    1
  2.    1/256
  3.    81/256
  4.    175/256
 Discuss Question
Answer: Option D. -> 175/256




Question 34. 2.42n + 1 + 33n+1 is divisible by
  1.    2
  2.    9
  3.    11
  4.    27
 Discuss Question
Answer: Option C. -> 11




Question 35. Two squares are chosen on a chessboard at random. What is the probability that they have a side in common?
  1.    1/18
  2.    64/4032
  3.    63/64
  4.    1/9
 Discuss Question
Answer: Option A. -> 1/18




Question 36. If | r- 6 | = 11 and |2q - 12| = 8, what is the minimum possible value of q / r ?
  1.    -2/5
  2.    -2
  3.    10/17
  4.    None of these
 Discuss Question
Answer: Option B. -> -2




Question 37. Find the values of n for which n+18 and n+90 is a perfect square ?
  1.    6
  2.    5
  3.    4
  4.    3
 Discuss Question
Answer: Option C. -> 4




Question 38. If a1 = 1 and an+1 = 2an + 5, n=1, 2....... then a100 is equal to
  1.    5 x 2^99 - 6
  2.    5 x 2^99 + 6
  3.    6 x 2^99 + 5
  4.    6 x 2^99 - 5
 Discuss Question
Answer: Option D. -> 6 x 2^99 - 5




Question 39. If a = tan60 tan 420 and B = cot660 cot 780
  1.    A = 2B
  2.    1 / 3 B
  3.    A = B
  4.    3A = 2B
 Discuss Question
Answer: Option C. -> A = B




Question 40. Let R1 and R2 respectively denote the maximum and minimum possible remainders when (276)n is divided by 91 for any natural number n,n>= 144. Find R1+R2.
  1.    90
  2.    82
  3.    84
  4.    64
 Discuss Question
Answer: Option B. -> 82




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