Reasoning

Number Systems and Series

143 Questions

Number systems and series questions assess the ability to manipulate numerical values and spot patterns. The focus includes digit arrangements, binary conversions, and identifying largest or smallest numbers. These reasoning tasks are common across major competitive examinations.

Digit manipulationLargest and smallest numbersBinary number systemsPositional numeral systemsNumber series ranking

Number Systems and Series Questions

Multiple choice

Which of the following statements is false?

  1. Numbers in ascending order means from smaller to larger.

  2. Numbers in descending order means from larger to smaller.

  3. Numbers in ascending order means from larger to smaller.

  4. The smallest 4-digit number is 1000.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Number in ascending order means from larger to smaller is false because ascending means the value of numbers is increasing. 

Multiple choice

If the digits 5, 4 and 9 are arranged, _____.

  1. the numbers beginning with 5 will be 549 and 594

  2. the numbers beginning with 4 will be 459 and 495

  3. the numbers beginning with 9 will be 945 and 954

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the above options are correct.

Multiple choice

If the digits 4, 6 and 0 are arranged, _____.

  1. the smallest three-digit number which can be formed by given digits is 406

  2. the largest three-digit number which can be formed by given digits is 640

  3. the largest three-digit number which can be formed by given digits is 406

  4. All are correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The statement 'the largest three-digit number is 406' is false.