Choose the odd one out from the following:

1. >
2. ==
3. &&
4. <

Given: String st = (a>= 90)? "Excellent": "Best";
Predict the output, when a = 90.

1. Best
2. Excellent: Best
3. Best: Excellent
4. Excellent

Given: x += x++ + ++x + --x
Find the value, when x=5.

1. 23
2. 21
3. 22
4. 24

Identify the type of operator &&:

1. ternary
2. unary
3. logical
4. relational