Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is different from the rest.

1. A

   435

2. B

   125

3. C

   375

4. D

   525

Appeared in: DSSSB - 29 August 2019 (Shift-1)

Explanation

• The core task is to find a common pattern among three options that the fourth option does not share.
• Three of the numbers (435, 375, 525) are divisible by 3. The sum of their digits are 12, 15, and 12, respectively, which are all multiples of 3.
• The number 125 is the exception. The sum of its digits is 1 + 2 + 5 = 8, which is not divisible by 3.
• Additionally, 125 is a perfect cube (5 × 5 × 5 = 125), a unique property not shared by the other numbers in the list.

Why Other Options Were Wrong

• Option A: 435 is divisible by 3 (4 + 3 + 5 = 12), which fits the common pattern shared by two other options.
• Option C: 375 is divisible by 3 (3 + 7 + 5 = 15), which fits the common pattern shared by two other options.
• Option D: 525 is divisible by 3 (5 + 2 + 5 = 12), which fits the common pattern shared by two other options.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Odd One Out (Number Properties) as background academic context rather than a clinical decision trigger.
• While not a clinical question, logical reasoning problems are a standard part of nursing entrance exams to evaluate a candidate's analytical and problem-solving abilities.
• These cognitive skills are essential for nurses to interpret patient data, recognize patterns in symptoms, and make sound clinical judgments under pressure.
• A nurse's ability to quickly identify an 'odd one out' in a set of vital signs or lab results can be critical for early diagnosis and intervention.

How to Approach the Question

• First, identify the question type as an 'Odd One Out' or classification problem, where the goal is to find the item that doesn't belong to the group.
• Examine the options provided: 435, 125, 375, 525. All are three-digit numbers.
• Systematically test for common mathematical properties to find a pattern. Start with simple properties.
• Check for divisibility. All numbers end in 5, so all are divisible by 5. This is a common property, not a differentiator.
• Test for divisibility by 3 by summing the digits of each number: 4+3+5=12; 1+2+5=8; 3+7+5=15; 5+2+5=12.
• Observe that three of the sums (12, 15, 12) are divisible by 3, but one sum (8) is not. This identifies 125 as the odd one out.

Concept Tested & Keywords

• Concept Tested: Odd One Out (Number Properties)
• Stem keywords: similar in a certain manner, not like the other three, different from the rest
• Lead-in keywords: Select the option

Question ID

QuCMNp1hG2Y_a5BnwRVGWL

Copy ID