If a = (-20) + (-20) + (-20) + ... added 12 times and b = (-3) × (-3) × (-3), then what is the value of a + b?

What is the remainder when (120)188 is divided by 7?

What is the unit digit of the product of all even numbers between 1 and 11?

When a number is divided by 136, it leaves a remainder of 36. If the same number is divided by 17, what will be the remainder?