Fractal Analytics interview question for Data Scientist Post

1.Difference between array and list
2.Map function
3. Scenario,
if coupon distributed randomly to customers of swiggy, how to check there buying behaviour.
Use segmenting customers
Compare customers who got coupon and who did not
4. Which is faster dictionary or list for look up
5. How to merge two arrays
6. How much time svm takes to complete if 1 iteration takes 10sec for 1st class.
And there are 4 classes.
7. Kernals in svm, there difference