Problems on Numbers MCQ

Test your knowledge with important Problems on Numbers MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Problems on Numbers MCQs on Bissoy. Bissoy App

• If the digit in the unit's place of a two-digit number is halved and the digit in the ten's place is doubled, the number thus obtained is equal to the number obtained by interchanging the digits. Which of the following is definitely true ?
  ক

  Sum of the digits is a two-digit number

  খ

  Digit in the unit's place is half of the digit in the ten's place

  গ

  Digit in the unit's place and the ten's place are equal

  ঘ

  Digit in the unit's place is twice the digit in the ten's place
• A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is:
  ক

  145

  খ

  253

  গ

  370

  ঘ

  352
• The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is:
  ক

  380

  খ

  395

  গ

  400

  ঘ

  425
• Find a positive number which when increased by 17 is equal to 60 times the reciprocal of the number.
  ক

  3

  খ

  10

  গ

  17

  ঘ

  20
• A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:
  ক

  18

  খ

  24

  গ

  42

  ঘ

  81
• The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
  ক

  3

  খ

  4

  গ

  9

  ঘ

  Cannot be determined

  ঙ

  None of these
• If one-third of one-fourth of a number is 15, then three-tenth of that number is:
  ক

  35

  খ

  36

  গ

  45

  ঘ

  54

  ঙ

  None of these
• 10 Consecutive numbers are given. If the average of the two numbers given in the middle is 13.5, then what is the sum of the first 6 numbers?
  ক

  65

  খ

  \59

  গ

  69

  ঘ

  80
• 1.1 + 12.12 + 123.123 = ?
  ক

  134.343

  খ

  133.433

  গ

  132.123

  ঘ

  136.343
• Which instrument is used for viewing the sun?
  ক

  Stroboscope

  খ

  Telescope

  গ

  Helioscope

  ঘ

  Sun meter
• Which of the following is the least of all?
  ক

  0.5

  খ

  1\/0.5

  গ

  0.5 * 0.5

  ঘ

  0.5 * 2
• Which of the following numbers is a prime number?
  ক

  161

  খ

  181

  গ

  121

  ঘ

  141
• Which of the following pairs is NOT a pair of twin primes?
  ক

  71, 73

  খ

  131, 133

  গ

  191, 193

  ঘ

  11, 13
• Which of the following numbers is composite?
  ক

  241

  খ

  261

  গ

  271

  ঘ

  251
• Which of the following is in ascending order?
  ক

  0.65, 0.76, 0.67, 0.86

  খ

  0.65, 0.86, 0.67, 0.76

  গ

  0.65, 0.67, 0.76, 0.86

  ঘ

  0.67, 0.65, 0.76, 0.86
• How many prime numbers are there between the positive integers 60 and 100?
  ক

  9

  খ

  6

  গ

  7

  ঘ

  8
• In a number system, on dividing 11509 by a certain number, Mukesh gets 71 as quotient and 7 as remainder. What is the divisor?
  ক

  132

  খ

  172

  গ

  182

  ঘ

  162
• Which of the following numbers is divisible by 12?
  ক

  73412

  খ

  63412

  গ

  83412

  ঘ

  93412
• How many three digit whole numbers are there between 75 and 405?
  ক

  305

  খ

  307

  গ

  304

  ঘ

  306
• How many natural numbers between 15 and 85 are divisible by 7?
  ক

  9

  খ

  10

  গ

  8

  ঘ

  7
• Which of the following numbers is divisible by 9?
  ক

  12321

  খ

  12345

  গ

  45654

  ঘ

  45678
• The square root of which of the following numbers is irrational?
  ক

  3969

  খ

  5625

  গ

  6560

  ঘ

  1764
• What is the mean of first hundred natural numbers?
  ক

  50

  খ

  50.5

  গ

  51.5

  ঘ

  51
• What will be the maximum power of 8 that exactly divides 25!?
  ক

  6

  খ

  7

  গ

  8

  ঘ

  9
• Which of the following numbers is not composite?
  ক

  209

  খ

  203

  গ

  161

  ঘ

  109
• What is the average of first 30 multiples of 9?
  ক

  142

  খ

  138.5

  গ

  139.5

  ঘ

  143.5
• Find the least number which when divided by 12, 15, 18 and 27 leaves remainders 10, 13, 16 and 25 respectively.
  ক

  540

  খ

  538

  গ

  542

  ঘ

  552
• The product of two numbers is 40. One of them is 2.50. What is the other number?
  ক

  14

  খ

  15

  গ

  16

  ঘ

  12
• Find the number which is NOT a prime number.
  ক

  89

  খ

  87

  গ

  79

  ঘ

  97
• The product of two numbers is 0.324. One of the numbers is 1.2. What is the other number?
  ক

  2.7

  খ

  0.27

  গ

  0.027

  ঘ

  27