Most Used Algorithm

[shubham-sahu-f9bcb5d8 (shubham sahu)]

Which Algorithms of machine learning are mostly used . Do data scientist had master all algorithm

[iftekar-patel-f1e6bf65 (Iftekar Patel)]

No its not necessary to know all the machine learning algos for starters one should atleast undestand Linear and Logistic regression.
ref:https://towardsdatascience.com/ten-machine-learning-algorithms-you-should-know-to-become-a-data-scientist-8dc93d8ca52e