Can you solve the below tricky visual equation?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What has 13 hearts but no other organs?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

When it is alive we sing, when it is dead we clap our hands. What is it?

Spot 5 differences in two Christmas tree below:

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Find The Missing Number In the Sequence.
6 25 64 ? 32 1