Can you count the number of quadrilaterals in the picture below?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Find the next number in the sequence

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

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Next Number in the Series,

5, 16, 49, 104, ?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

What is the centre of gravity?

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?