How can one talk without saying a single word?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

Do you know who was buried in John's tomb?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

I have eight fingers and two thumbs but I do not live. What Am I?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?