Number System Questions with Solutions

Number System Questions with Answers and Solutions – Free Mock Test for Online Practice. MCQs from SSC CGL, CHSL, GD Previous papers for competitive Exams preparation.

Quiz : Number System
Subject : Quantitative Aptitude (Maths)
Objective Questions with Solutions
Free online practice Set of all type important and repeated questions


#1. If a number is as much greater than 31 as it is less than 75, then the number is :

#2. When 335 is added to 5A7, the result is 8B2. 8B2 is divisible by 3. What is the largest possible value of A?

#3. The greatest among the following numbers \((3)^\frac13\),\((2)^\frac12\),1,\((6)^\frac16\)is

#4. The greatest value among the fractions \(\frac27, \frac13,\frac56, \frac34\)

#5. Which of the following number is the greatest of all? \(0.9,0.{\overline9},0.0{\overline9},0.\overline{09}\)

#6. Which of the following is the smallest fraction?\(\frac67, \frac56, \frac78, \frac45\)

#7. The least number that should be added to 2055, so that the sum is exactly divisible by 27 is :

#8. In a farm there are cows and hens. If the heads are counted they are 180, if legs are counted they are 420. The number of cows in the farm is :

#9. If a = 4011 and b = 3989, then the value of ab = ?

#10. How many numbers between 400 and 800 are divisible by 4, 5 and 6?

#11. (461 + 462 + 463) is divisible by

#12. The least number, which is to be added to the greatest number of 4 digits so that the sum may be divisible by 345 is :

#13. A number when divided by 221 leaves a remainder 64. What is the remainder if the same number is divided by 13?

#14. 461+ 462 + 463 + 464 is divisible by

#15. (49)15 – 1 is exactly divisible by

#16. The number 96 – 11 when divided by 8 would leave a remainder of

#17. Divide 50 into two parts so that the sum of their reciprocals is \(\frac{1}{12}\)

#18. In a class, there are ‘z’ students. Out of them ‘x’ are boys. What part of the class is composed of girls?

#19. In a school \(\frac{1}{10}\) of the boys are same in number as \(\frac14\) of the girls and \(\frac58\) of the girls are same in number as \(\frac14\) of the boys. The ratio of the boys to girls in that school is :

#20. A student was asked to multiply a given number by \(\frac{8}{17}\) Instead, he divided the number by \(\frac{8}{17}\) His answer was 225 more than the correct answer. The given number was :

#21. The rational number between \(\frac12\) and \(\frac35\) is

#22. The product of two fractions is \(\frac{14}{15}\) and their quotient is \(\frac{35}{24}\) The greater of the fractions is :

#23. If one-ninth of a certain number exceeds its one-tenth by 4, the number is :

#24. Six numbers are arranged in decreasing order. The average of the first five numbers is 30 and the average of the last five numbers is 25. The difference of the first and the last numbers is :

#25. Arrange \(\frac45,\frac78,\frac67,\frac56\) in the ascending order.

#26. The digit in unit’s place of the number (1570)2 + (1571)2 + (1572)2 + (1573)2 is :

#27. Find the unit digit in the product

(4387)245 × (621)72

#28. Unit digit in (264)102 + (264)103 is :

#29. The sum of four consecutive even numbers is 748. The smallest among them is

#30. The sum of the squares of three consecutive natural numbers is 2030. Then, what is the middle number?

#31. The length of a road is one kilometre. The number of plants required for plantation at a gap of 20 metres in both sides of the road is

#32. Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is

#33. The sum of a natural number and its square equals the product of the first three prime numbers. The number is

#34. Instead of multiplying a number by 0.72, a student multiplied it by 7.2. If his answer was 2592 more than the correct answer, then the original number was :

#35. On multiplying a number by 7, all the digits in the product appear as 3’s. The smallest such number is :


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