# Number System

Number System Questions: What is Number System in Maths? Divisibility Rules for 7, Divisibility Rules for 11, Binomial Theorem Questions, Factorize Expressions

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## Online Aptitude Questions with Answers on Number System

Q51. **Sum of two consecutive even terms lacks by 98 from their product. Find the sum of these numbers?**

1.  18
2.  24
3.  32
4.  None

Solution : None
Q52. **If one third of 3/4 of a number is 21. Then find the number?**

1.  840
2.  630
3.  84
4.  63

Solution : 84
Q53. **A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits?**

1.  60
2.  8
3.  7
4.  12

Solution : 12
Q54. **Subtracting 30 from a number, the remainder is one fourth of the number. Find the number?**

1.  22.5
2.  30
3.  40
4.  50

Solution : 40

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Q55. **Sum of the digits of a 2-digit number is 8 and their product is 12. Find the difference between the digits.**

1.  4
2.  6
3.  2
4.  None of these

Solution : 4
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