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Quantitative Aptitude

NUMBER SERIES MCQs

Number Theory

Total Questions : 166 | Page 8 of 17 pages
Question 71. The unit digit in the product (784 x 618 x 917 x 463) is:
  1.    2
  2.    3
  3.    4
  4.    5
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2
Question 72. 3897 x 999 = ?
  1.    3883203
  2.    3893103
  3.    3639403
  4.    3791203
 Discuss Question
Answer: Option B. -> 3893103
Answer: (b).3893103
Question 73. If the number 653 xy is divisible by 90, then (x + y) = ?
  1.    2
  2.    3
  3.    4
  4.    6
 Discuss Question
Answer: Option C. -> 4
Answer: (c).4
Question 74. What is the unit digit in 7^105 ?
  1.    1
  2.    5
  3.    7
  4.    9
 Discuss Question
Answer: Option C. -> 7
Answer: (c).7
Question 75. Which of the following numbers will completely divide (4^61 + 4^62 + 4^63 + 4^64) ?
  1.    3
  2.    10
  3.    11
  4.    13
 Discuss Question
Answer: Option B. -> 10
Answer: (b).10
Question 76. 8988 ÷ 8 ÷ 4 = ?
  1.    4494
  2.    561.75
  3.    2247
  4.    280.875
 Discuss Question
Answer: Option D. -> 280.875
Answer: (d).280.875
Question 77. 8796 x 223 + 8796 x 77 = ?
  1.    2736900
  2.    2638800
  3.    2658560
  4.    2716740
 Discuss Question
Answer: Option B. -> 2638800
Answer: (b).2638800
Question 78. A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. When it is successively divided by 5 and 4, then the respective remainders will be
  1.    1, 2
  2.    2, 3
  3.    3, 2
  4.    4, 1
 Discuss Question
Answer: Option B. -> 2, 3
Answer: (b).2, 3
Question 79. 106 x 106 - 94 x 94 = ?
  1.    2400
  2.    2000
  3.    1904
  4.    1906
 Discuss Question
Answer: Option A. -> 2400
Answer: (a).2400
Question 80. 287 x 287 + 269 x 269 - 2 x 287 x 269 = ?
  1.    534
  2.    446
  3.    354
  4.    324
 Discuss Question
Answer: Option D. -> 324
Answer: (d).324

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