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.**
- 3
- 10
- 17
- 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:**
- 380
- 395
- 400
- 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:**
- 20
- 23
- 169
- None of these
Solution : 23
Q24. **What is the sum of two consecutive even numbers, the difference of whose squares is 84?**
- 34
- 38
- 42
- 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.**
- I alone sufficient while II alone not sufficient to answer
- II alone sufficient while I alone not sufficient to answer
- Either I or II alone sufficient to answer
- Both I and II are not sufficient to answer
- Both I and II are necessary to answer
Solution : Either I or II alone sufficient to answer
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