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Quantitative Aptitude

NUMBER SERIES MCQs

Number Theory

Total Questions : 166 | Page 14 of 17 pages
Question 131. If a and b are odd numbers, then which of the following is even ?
  1.    a + b
  2.    a + b + 1
  3.    ab
  4.    ab + 2
 Discuss Question
Answer: Option A. -> a + b
Answer: (a).a + b
Question 132. In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?
  1.    0
  2.    12
  3.    13
  4.    20
 Discuss Question
Answer: Option D. -> 20
Answer: (d).20
Question 133. 9548 + 7314 = 8362 + (?)
  1.    8230
  2.    8410
  3.    8500
  4.    8600
 Discuss Question
Answer: Option C. -> 8500
Answer: (c).8500
Question 134. The sum of even numbers between 1 and 31 is:
  1.    6
  2.    28
  3.    240
  4.    512
 Discuss Question
Answer: Option C. -> 240
Answer: (c).240
Question 135. 2 + 2^2 + 2^3 + ... + 2^9 = ?
  1.    2044
  2.    1022
  3.    1056
  4.    None of these
 Discuss Question
Answer: Option B. -> 1022
Answer: (b).1022
Question 136. If the number 91876 * 2 is completely divisible by 8, then the smallest whole number in place of * will be:
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 137. 2056 x 987 = ?
  1.    1936372
  2.    2029272
  3.    1896172
  4.    1926172
 Discuss Question
Answer: Option B. -> 2029272
Answer: (b).2029272
Question 138. On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is:
  1.    47619
  2.    47719
  3.    48619
  4.    47649
 Discuss Question
Answer: Option A. -> 47619
Answer: (a).47619
Question 139. If 60% of 3/5 of a number is 36, then the number is:
  1.    80
  2.    100
  3.    75
  4.    90
 Discuss Question
Answer: Option B. -> 100
Answer: (b).100
Question 140. If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y = ?
  1.    2 or 6
  2.    4
  3.    4 or 8
  4.    8
 Discuss Question
Answer: Option A. -> 2 or 6
Answer: (a).2 or 6

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