Question 03 Numbers

4500 x? = 3375

Correct answer B. 3/4

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About Numbers MCQs

This category trains the arithmetic reasoning that underpins most quantitative aptitude papers. Questions ask you to find missing numbers in calculations, add the odd numbers below a limit, work out remainders when a number is divided by a factor of the original divisor, identify primes, and use divisibility by 9 or 23 to find a missing digit or the least number to add. Place value versus face value also appears.

A few questions apply number skills to speed and length problems, such as a train passing a pole or a platform, or two trains moving in the same direction. These items are standard in recruitment aptitude tests because they reward clear method over memorisation. Practising them regularly helps you spot shortcuts and avoid the long calculations that waste time in timed exams.

Key facts to remember

  • A number is divisible by 9 if the sum of its digits is divisible by 9.
  • Two is the only even prime number, and 1 is neither prime nor composite.
  • The sum of the first n odd natural numbers equals n squared.
  • Place value of a digit is the digit multiplied by its positional value, while face value is the digit itself.
  • A train crossing a platform travels its own length plus the platform's length.

Exams that include Numbers MCQs

Pakistan

  • NTS
  • GAT
  • ECAT
  • ISSB
  • Army/Navy/PAF initial tests
  • Banking job tests

India

  • SSC CGL
  • SSC CHSL
  • IBPS PO
  • IBPS Clerk
  • SBI PO
  • RRB NTPC
  • Campus placements

Bangladesh

  • Bank job exams
  • Bangladesh Bank recruitment
  • BCS
  • Government job tests

How to prepare for Numbers MCQs

  1. Memorise divisibility rules for 2 to 11, as they quickly solve missing-digit and least-number-to-add questions without long division.
  2. When the new divisor is a factor of the old one, divide the old remainder by the new divisor to get the answer.
  3. Convert km/h to m/s by multiplying by 5/18 before solving train questions given in metres and seconds.
  4. Check the units digit and rough size of each option first, which often eliminates two choices before you calculate.

Frequently asked questions

What topics are covered in Numbers MCQs?

Numbers MCQs cover the number system, divisibility rules, prime and composite numbers, remainders, place and face value, sums of series of odd or even numbers, and simplification. Some questions also apply these skills to speed, distance and train problems, which are common in quantitative aptitude sections.

How many Numbers MCQs are on MCQs360?

This aptitude category on MCQs360 has 104 Numbers MCQs, all with instant answers. Practice is free and needs no sign-up, so you can attempt a few timed questions daily and pair them with the basic algebra and age questions sections.

Which exams ask Numbers MCQs?

Number system questions appear in NTS, GAT, ISSB and armed forces initial tests, and in banking job tests in Pakistan. In India they are standard in SSC CGL, SSC CHSL, IBPS, SBI, RRB NTPC and campus placement tests. In Bangladesh they feature in bank job exams and BCS mathematical reasoning.

How do you find the remainder when a number is divided by a smaller divisor?

If the new divisor is a factor of the original divisor, divide the original remainder by the new divisor. For example, a number leaves remainder 29 when divided by 56. Since 8 divides 56, divide 29 by 8, which leaves remainder 5. So the number leaves remainder 5 when divided by 8.

Last reviewed October 2026