If 1+9+8=1, what is 2+8+9?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

What Adam and Eve do not have but the rest of the people have?

Can you solve the below tricky visual equation?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

I always drive my customer away.

Who am I?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

What number should come in place of the question mark below?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?