Question
"Three friends, Aman, Bhuvan, and
Chinu, have the following age relationship: Aman's age six years ago was half of Bhuvan's age ten years from now. The combined current ages of Aman and Bhuvan amount to 56 years. If Chinu is currently 4 years younger than Bhuvan, what is Chinu's present age?"Solution
ATQ, Let the age of Aman and Bhuvan be ‘a’ years and ‘b’ years respectively. According to question, 2(a – 6) = (b + 10) 2a – 12 = b + 10 2a – b = 22 -------- (1) And, (a + b) = 56 --------- (2) Solving (1) and (2), we get a = 26 and b = 30 So, the age of Chinu = 30 – 4 = 26 years
Which of the following best defines the concept of the "Internet of Things" (IoT)?
Which schema in data warehousing uses a central fact table connected to dimension tables?
Data warehouse metadata primarily describes:
Which type of slowly changing dimension (SCD) preserves full history by adding a new row for each change and using effective date ranges?
Which of these is NOT an ensemble method?
In a snowflake schema of a data warehouse, which of the following consequences is most likely as a result of normalization of dimension tables?
Which OLAP operation involves focusing on a subset of dimensions (e.g., region=‘Asia’)?
ETL stands for:
Which SQL keyword is used to combine results from two queries and remove duplicates?
Data cleansing is primarily concerned with:
