Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

- All rational numbers are integers, but not vice versa.
- All integers are irrational numbers, but not vice versa.
- √2 is an integer.

If the first two statements are true, the third statement is:

**A**

true.

**B**

false.

**C**

uncertain.

**D**

None.

**Soln.**

**Ans: c**

√2 is an irrational number, which is a known fact. On the basis of the truth of the first two statements, we have to test: "Is an irrational an integer?" If you try to draw a Venn diagram you will get three concentric circles. Rational inside Integer and the Integer inside Irrational, which means that there are some irrationals that are integers, and some that are not. Hence the answer should be "uncertain".

### Question 2

- All the trees in the park are brown trees.
- Some of the trees in the park are green.
- All green in the park are brown trees.

If the first two statements are true, the third statement is.

### Question 3

- A torch is useful.
- Useful things are costly.
- A torch is costly.

If the first two statements are true, the third statement is.

### Question 4

- Three pens cost the same as two scales.
- Four scales cost the same as one box.
- Pens are more expensive than boxes.

If the first two statements are true, the third statement is.

### Question 5

- Pencils cost more than blade.
- Pencils cost less than pen.
- Pen cost more than blade and pencils.

If the first two statements are true, the third statement is.

### More Chapters | See All...

Compound Interest | Passwords and Inputs | Decimal Numbers | Problems on Numbers | Statements and Assumptions | Problems on Trains | Blood Relations | Percentages | Averages | Distance and Time | More...

This Blog Post/Article "Deductive Reasoning Quiz Set 007" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2019-08-18.