# 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

Q161. **In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A?**

1.  1/5
2.  1/25
3.  2/5
4.  None of these

Solution : 2/5
Q162. **The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:**

1.  20
2.  30
3.  40
4.  None of these

Solution : 20
Q163. Which of the following number is divisible by 24 ?

1.  35718
2.  63810
3.  537804
4.  3125736

Solution : 3125736
Q164. ![enter image description here][1] [1]: https://storage.googleapis.com/codegrounds/questionImages/5fe7fbb8-da99-4768-9502-22c385442d08_USER-RecruiterCopy_ITEM-question.png

1.  6 only
2.  6 and 12 both
3.  12 only
4.  by 18 only

Solution : 6 and 12 both

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Q165. **(753 x 753 + 247 x 247 - 753 x 247)/(753 x 753 x 753 + 247 x 247 x 247)= ?**

1.  1/1000
2.  1/506
3.  253/500
4.  None of these

Solution : 1/1000
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