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Quantitative Aptitude

NUMBER SERIES MCQs

Number Theory

Total Questions : 166 | Page 2 of 17 pages
Question 11. The smallest 5 digit number exactly divisible by 41 is:
  1.    1004
  2.    10004
  3.    10045
  4.    10025
 Discuss Question
Answer: Option B. -> 10004
Answer: (b).10004
Question 12. If x and y are positive integers such that (3x + 7y) is a multiple of 11, then which of the following will be divisible by 11 ?
  1.    4x + 6y
  2.    x + y + 4
  3.    9x + 4y
  4.    4x - 9y
 Discuss Question
Answer: Option D. -> 4x - 9y
Answer: (d).4x - 9y
Question 13. The largest 5 digit number exactly divisible by 91 is:
  1.    99921
  2.    99918
  3.    99981
  4.    99971
 Discuss Question
Answer: Option B. -> 99918
Answer: (b).99918
Question 14. The smallest 6 digit number exactly divisible by 111 is:
  1.    111111
  2.    110011
  3.    100011
  4.    110101
 Discuss Question
Answer: Option C. -> 100011
Answer: (c).100011
Question 15. How many terms are there in the G.P. 3, 6, 12, 24, ... , 384 ?
  1.    8
  2.    9
  3.    10
  4.    11
 Discuss Question
Answer: Option A. -> 8
Answer: (a).8
Question 16. What is the unit digit in (4137)^754?
  1.    1
  2.    3
  3.    7
  4.    9
 Discuss Question
Answer: Option D. -> 9
Answer: (d).9
Question 17. 587 x 999 = ?
  1.    586413
  2.    587523
  3.    614823
  4.    615173
 Discuss Question
Answer: Option A. -> 586413
Answer: (a).586413
Question 18. If (64)^2 - (36)^2 = 20 * x, then x = ?
  1.    70
  2.    120
  3.    180
  4.    140
 Discuss Question
Answer: Option D. -> 140
Answer: (d).140
Question 19. Which one of the following can't be the square of natural number ?
  1.    32761
  2.    81225
  3.    42437
  4.    20164
 Discuss Question
Answer: Option C. -> 42437
Answer: (c).42437
Question 20. A number was divided successively in order by 4, 5 and 6. The remainders were respectively 2, 3 and 4. The number is:
  1.    214
  2.    476
  3.    954
  4.    1908
 Discuss Question
Answer: Option A. -> 214
Answer: (a).214

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