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3M Interview Questions and Answers
10 Interview questions
Use SELECT DISTINCT to remove duplicates from a table in SQL.
Use SELECT DISTINCT to retrieve unique rows from a table.
For example, SELECT DISTINCT column_name FROM table_name;
Another way is to use GROUP BY with aggregate functions to remove duplicates.
For example, SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name;
Identify the most frequently occurring element in an array using efficient algorithms.
Use a hash map to count occurrences of each element. Example: For [1, 2, 2, 3], count becomes {1: 1, 2: 2, 3: 1}.
Iterate through the hash map to find the element with the highest count. In the example, 2 is the most frequent.
Consider edge cases: empty arrays return null, arrays with all unique elements return any element.
For larg...
Tables store data in a structured format, while views are virtual tables that display data from one or more tables.
Tables store data physically on disk, while views do not store data physically but display data from tables.
Tables can be modified directly, while views are read-only.
Views can be used to simplify complex queries by pre-defining joins and filters.
Example: Table 'Employees' stores employee data, while ...
Estimate dealer counter's volume and monthly sales by analyzing historical data, market trends, and dealer performance.
Analyze historical sales data to identify trends and patterns
Consider market conditions and economic factors that may impact sales
Evaluate dealer performance and track record
Conduct market research and gather competitor information
Utilize sales forecasting techniques and tools
Regularly communicate...
To grow in a declining business territory, focus on customer retention, explore new markets, improve product offerings, and enhance sales strategies.
Focus on customer retention by providing excellent customer service and building strong relationships.
Explore new markets by conducting market research and identifying potential opportunities for growth.
Improve product offerings by listening to customer feedback and a...
QA focuses on preventing defects in the process, while QC focuses on identifying defects in the product.
QA is process oriented, ensuring that the processes used to manage and create deliverables are effective and efficient.
QC is product oriented, focusing on identifying defects in the final product through testing and inspection.
QA involves activities like process audits, training, and process improvement initiati...
Deviation and change control are processes used in quality management to document and manage any deviations from standard procedures and any changes made to processes or products.
Deviation refers to a departure from standard procedures or specifications.
Change control is the process of managing changes to processes, products, or systems in a controlled manner.
Deviation and change control help ensure that any devia...
Stability test is a process to evaluate the chemical and physical properties of a product over time to ensure its quality and shelf life.
Stability tests are conducted to determine how a product's quality changes over time under various conditions such as temperature, humidity, and light exposure.
These tests help in establishing the shelf life of a product and ensuring its effectiveness and safety for consumers.
Exa...
Vulnerability management and pentesting are crucial for identifying and mitigating security risks in an organization.
Vulnerability management involves identifying, classifying, and prioritizing vulnerabilities in systems and applications.
Penetration testing simulates real-world attacks to evaluate the effectiveness of security measures.
Regular pentesting helps in discovering vulnerabilities that may not be identif...
To improve further, we need to focus on continuous learning, team collaboration, and leveraging technology for efficiency.
Implement regular training sessions to enhance team skills, e.g., workshops on new software tools.
Encourage open communication through weekly team meetings to share ideas and feedback.
Utilize project management tools like Trello or Asana to streamline workflows and track progress.
Set measurable...
3M Interview Experiences
33 interviews found
Anonymous
Selected
I appeared for an interview before Feb 2023.
(4 Questions)
- Q1. Difference between QA and QC
- Ans.
QA focuses on preventing defects in the process, while QC focuses on identifying defects in the product.
QA is process oriented, ensuring that the processes used to manage and create deliverables are effective and efficient.
QC is product oriented, focusing on identifying defects in the final product through testing and inspection.
QA involves activities like process audits, training, and process improvement initiatives.
Q...
- Q2. What is deviation and change control
- Ans.
Deviation and change control are processes used in quality management to document and manage any deviations from standard procedures and any changes made to processes or products.
Deviation refers to a departure from standard procedures or specifications.
Change control is the process of managing changes to processes, products, or systems in a controlled manner.
Deviation and change control help ensure that any deviations...
- Q3. What is stability test
- Ans.
Stability test is a process to evaluate the chemical and physical properties of a product over time to ensure its quality and shelf life.
Stability tests are conducted to determine how a product's quality changes over time under various conditions such as temperature, humidity, and light exposure.
These tests help in establishing the shelf life of a product and ensuring its effectiveness and safety for consumers.
Examples...
- Q4. GMP act details
I applied via Recruitment Consulltant and was interviewed in Dec 2024. There was 1 interview round.
(2 Questions)
- Q1. Top frequent element
- Ans.
Identify the most frequently occurring element in an array using efficient algorithms.
Use a hash map to count occurrences of each element. Example: For [1, 2, 2, 3], count becomes {1: 1, 2: 2, 3: 1}.
Iterate through the hash map to find the element with the highest count. In the example, 2 is the most frequent.
Consider edge cases: empty arrays return null, arrays with all unique elements return any element.
For large dat...
- Q2. SQL query to remove duplicates
- Ans.
Use SELECT DISTINCT to remove duplicates from a table in SQL.
Use SELECT DISTINCT to retrieve unique rows from a table.
For example, SELECT DISTINCT column_name FROM table_name;
Another way is to use GROUP BY with aggregate functions to remove duplicates.
For example, SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name;
Selected
I applied via Recruitment Consulltant and was interviewed in Sep 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Introduction on myself and work background
- Q2. Discussion on experience
(2 Questions)
- Q1. Introduction on work background
- Q2. Discussed about experience
(1 Question)
- Q1. ITIL V4 related questions and situation based questions
(1 Question)
- Q1. Based on ITIL V4 in depth questions
(1 Question)
- Q1. Salary expectations and other info
Interview Preparation Tips
(1 Question)
- Q1. How did you handle the critical situation of the big which needs to solved in U platform
- Ans.
I handled the critical situation by conducting thorough root cause analysis, collaborating with cross-functional teams, and implementing a strategic action plan.
Conducted a thorough root cause analysis to identify the source of the bug
Collaborated with cross-functional teams including developers, product managers, and stakeholders
Implemented a strategic action plan to address the bug efficiently and effectively
Dhana Beatrice Celon
(2 Questions)
- Q1. Tell me about yourself
- Ans.
I am a dedicated Customer Care Manager with extensive experience in enhancing customer satisfaction and team performance.
Customer-Centric Approach: I prioritize understanding customer needs, which led to a 20% increase in customer satisfaction scores at my previous job.
Team Leadership: I successfully managed a team of 15 customer service representatives, implementing training programs that improved response times by 30...
- Q2. How did you handle a difficult situation
- Ans.
In a challenging customer service scenario, I effectively resolved a conflict by actively listening and providing tailored solutions.
Active Listening: I listened carefully to the customer's concerns, ensuring they felt heard and understood, which helped de-escalate the situation.
Empathy: I expressed empathy for their frustration, acknowledging their feelings and validating their experience, which built rapport.
Tailored...
I applied via Recruitment Consulltant and was interviewed in Aug 2024. There was 1 interview round.
Leetcode Medium quesions
(1 Question)
- Q1. Strengths and weaknesses
Prateek Pandey
SQL functions and medium level query questions.
Portfolio review of graduation project
(1 Question)
- Q1. Explain your last project
- Ans.
In my last project, I designed a user-friendly e-commerce platform focusing on enhancing customer experience and increasing sales.
User Research: Conducted surveys and interviews to understand user needs, leading to a design that prioritized ease of navigation.
Responsive Design: Implemented a mobile-first approach, ensuring the platform is fully functional and visually appealing on all devices.
Visual Hierarchy: Used col...
Graphic design project for OEMs
(1 Question)
- Q1. Why do you want to work at 3M
Selected
I appeared for an interview before Mar 2024.
(2 Questions)
- Q1. Tell me about yourself.
- Q2. What sales responsibilities have you handled in your current job?
- Ans.
In my current role, I manage sales strategies, client relationships, and team performance to drive revenue growth.
Developed and implemented sales strategies that increased territory revenue by 25% over the last year.
Managed a team of 5 sales representatives, providing training and support to enhance their performance.
Built and maintained strong relationships with key clients, resulting in a 30% increase in repeat busin...
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