Cognizant Programme Analyst interview questions

1st Technical Interview. Q1. Sum of integers till x which are multiples of 3 & 5. Did. Q2. There are three boxes, 1st contains Apple, 2nd contains Orange, 3rd box is mixed with orange and apple. Every box is incorrectly labeled. What will be the minimum check required to determine the correct ordering of the boxes. Did. Q3. There are two candles, if once burnt it would last for around 1 hour. Calculate 45 minutes. Took some time, Did. Was told to wait for the 2nd interview. After 2–3 minutes I was called for the second interview. 2nd Technical Interview. Q1. Hierarchy based problem, I could use anything. Told him the approach using tree, where each node may have as many children. He told me to write the code. Wrote Q2. Suppose there is a number 5025, it contains 5 as well as 25. 25 is the square of 5 thus your algorithm will return true, else false. It have to work for any number. Did Q3. SQL query. Had some problem, I’as thinking more but it was a simple problem. I told him the approach about how I was thinking. He helped me remove the confusion and then the problem was solved. He told me to wait for the HR round. HR round Basic questions. Gave the answers.