How do you go from 98 to 720 using just one letter?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Can you place six X (crosses) in below board without making three in a row in any way ?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

I have no life, but I can die. What am I?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

What is the word or phrase?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?