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Cubastion Consulting Interview Questions and Answers

Updated 17 Oct 2024

Q1. Puzzle 2 - 10 bags each have 10 coins each coin weighs 1 gm but in 1 bag only all coins weigh 0.9 gm. You can use the weighing machine only once how to find the bag with 0.9 gm coins?

Ans.

10 bags with 10 coins each, one bag has 0.9 gm coins. How to find it using weighing machine once?

  • Number the bags from 1 to 10

  • Take 1 coin from bag 1, 2 coins from bag 2, 3 coins from bag 3, and so on

  • Weigh all the coins together

  • Subtract the expected weight (550 gm) from the actual weight to get the bag number with 0.9 gm coins

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Q2. Puzzle 1 - A cake is there 3 cuts are allowed how to make 8 pieces

Ans.

Cut the cake twice horizontally and once vertically to make 8 pieces.

  • Make two horizontal cuts to get three layers

  • Make one vertical cut through the center

  • Total 8 pieces will be obtained

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Q3. A SQL-based query to find employees with salaries between a certain range?

Ans.

SQL query to find employees with salaries in a certain range.

  • Use the SELECT statement to retrieve data from the table.

  • Use the WHERE clause to filter the data based on salary range.

  • Use the BETWEEN operator to specify the salary range.

  • Example: SELECT * FROM employees WHERE salary BETWEEN 50000 AND 70000;

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Q4. What is the use of the Where clause?

Ans.

The WHERE clause is used to filter data in a SQL query.

  • It is used to specify a condition to filter the rows returned in a SELECT statement.

  • It can be used with various operators such as =, <, >, LIKE, etc.

  • It can also be used with logical operators such as AND, OR, NOT.

  • Example: SELECT * FROM customers WHERE age > 18 AND city = 'New York';

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Q5. tell about delete function in sql?

Ans.

The DELETE function in SQL is used to remove rows from a table based on specified conditions.

  • DELETE FROM table_name WHERE condition;

  • The DELETE statement without a WHERE clause will delete all rows in the table.

  • It is important to use the WHERE clause to avoid accidentally deleting all data in a table.

  • Deleted rows can be recovered using a backup if needed.

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Q6. Implementation of seive

Ans.

Sieve of Eratosthenes is an algorithm used to find all prime numbers up to a given limit.

  • Create a list of numbers from 2 to the limit.

  • Start with the first number in the list (2) and mark all its multiples as composite.

  • Move to the next unmarked number in the list and repeat the process.

  • Continue until all numbers have been processed, the unmarked numbers are prime.

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Q7. Create a training module

Ans.

Training module on effective communication skills

  • Identify different communication styles

  • Practice active listening techniques

  • Provide feedback on communication exercises

  • Role-play scenarios to improve communication skills

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