# 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

Q146. **The sum of three numbers is 264. If the first number is twice the second and the third number is one-third of the first, then the second number is?**

1.  48
2.  54
3.  72
4.  84

Solution : 72
Q147. **The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is:**

1.  10
2.  12
3.  15
4.  16

Solution : 12

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Q148. **The sum of two numbers is 25 and their difference is 13. Find their product.**

1.  104
2.  114
3.  315
4.  325

Solution : 114
Q149. **The difference between two integers is 5. Their product is 500. Find the numbers.**

1.  15, 20
2.  20, 25
3.  30, 25
4.  21, 26

Solution : 20, 25

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Q150. **If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:**

1.  12
2.  28
3.  160
4.  180

Solution : 160
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