# 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

Q21. **Find a positive number which when increased by 17 is equal to 60 times the reciprocal of the number.**

1.  3
2.  10
3.  17
4.  20

Solution : 3
Q22. **The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is:**

1.  380
2.  395
3.  400
4.  425

Solution : 400
Q23. **The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is:**

1.  20
2.  23
3.  169
4.  None of these

Solution : 23
Q24. **What is the sum of two consecutive even numbers, the difference of whose squares is 84?**

1.  34
2.  38
3.  42
4.  46

Solution : 42

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Q25. The question given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. **What is the number?** **I. The sum of the two digits is 8. The ratio of the two digits is 1 : 3.** **II. The product of the two digit of a number is 12. The quotient of two digits is 3.**

1.  I alone sufficient while II alone not sufficient to answer
2.  II alone sufficient while I alone not sufficient to answer
3.  Either I or II alone sufficient to answer
4.  Both I and II are not sufficient to answer
5.  Both I and II are necessary to answer

Solution : Either I or II alone sufficient to answer
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