Write pass_fail(marks) returning an array of "Pass"/"Fail" (pass ≥ 40) using np.where.
pass_fail([35, 40, 90]) → ['Fail', 'Pass', 'Pass']
pass_fail([0]) → ['Fail']
Submit runs 3 tests, including hidden edge cases.
Each hint gives a little more help. Try on your own first.
Run your code to see the output here.