# 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

Q136. **The difference between a number and its three-fifth is 50. What is the number?**

1.  75
2.  100
3.  125
4.  None of these

Solution : 125
Q137. **If one-third of one fourth of a number is 15, then three-tenth of that number is:**

1.  35
2.  25
3.  45
4.  54

Solution : 54
Q138. **A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?**

1.  3.5
2.  6
3.  8
4.  None of these

Solution : 8
Q139. **Find the number which multiplied by 15 is increased by 196.**

1.  14
2.  20
3.  26
4.  28

Solution : 14

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Q140. **If one-half of a number exceeds one-third of that number by 3(1/3), the number is:**

1.  15
2.  18
3.  20
4.  30

Solution : 20
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