OG 2020: Question No. 302
Is x an integer?
- x3 = 8
- x = √4
| Source | OG 2020 |
| Type | Data Sufficiency |
| Topic | Number Properties |
| Sub-Topic | Basics |
| Difficulty | Easy |
Solution
Steps 1 & 2: Understand Question and Draw Inferences
In this question, we are asked to determine
- Whether x is an integer or not.
As we do not have any pertinent information present in the question stem, we will move forward to analyse the individual statements.
Step 3: Analyse Statement 1
As per the information present in statement 1, x3 = 8.
Taking cube-root on both sides of the equation, we get
- x3 = 8
Or, x = ³√8 = 2
As x = 2, we can conclude that x is an integer.
Hence, statement 1 is sufficient to answer the question.
Step 4: Analyse Statement 2
As per the information given in statement 2, x = √4
- Or, x = 2, which is an integer
Hence, statement 2 is sufficient to answer the question.
Step 5: Combine Both Statements Together (If Needed)
Since we can determine the answer from either of the statements individually, this step is not required.
Hence, the correct answer choice is option D.
