Meta E4 Onsite|Coding - Pass/Fail?

I just completed my Meta onsite interviews with two coding rounds. Here\'s how they went: Question 1: Find the number of connections needed to connect all computers.

Input: [[a,b],[b,c],[d,e]]

Output: 1 Solution: Solved this...

I just completed my Meta onsite interviews with two coding rounds. Here\'s how they went:

Question 1: Find the number of connections needed to connect all computers.

Input: [[a,b],[b,c],[d,e]]

Output: 1
Solution: Solved this using DFS.

Question 2: Perform string multiplication.

Input: a = "10", b = "5"

Output: "50"
Unfortunately, I couldn\'t solve this one.

Question 3: Find a random index of the maximum value in an array.

Input: [1, 2, -1, 4, 5, 5]

Output: Randomly return one of the indices for 4 or 5.
Solved this optimally.

Question 4: Implement insert() and getMedian() for a sorted list.

Input: insert(3), insert(1), insert(2)

Output: getMedian() = 2
Initially solved by sorting the list after every insertion but later optimized it by maintaining the middle value(s).
What do you think? Is there still hope for me?