On a given dataset would time taken to train n - random forest be equal to time taken to train n X Decision tree

Question

If we run both the models on a single core would the time taken for model to train be equal.

Answer 1

No, the time to train the random forest and n - decision tree won't be same because random forest picks a subset of data or features or even both for each of the sub-tree, sometimes it might create some shallow (smaller) trees as well.

Hence time to train the random forest and decision tree won't be the same.

Further reading on the random forest: https://bit.ly/2u7erIB