Can you replace the question mark with the correct number?

81 x 9 = 801. What must you do to make the this equation true?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

You can see it everyday, But cannot touch it at will. What is it?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Can you find the missing piece of the Porsche?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?