Tough interview, friendly managers. Questions asked - generate the random numbers without using numpy libraries. Should be able to code in python, focus on python and ML libraries. Mathematics is the key

Multiple rounds. Starting with an online test of python and sql. Passed and got an email saying that i will proceed to next round. An HR called me to check on my pr status. I say i am local and do not need a visa. 1 day later i got the rejection email, and the job posting is reposted soon after.