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

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What can you catch but never throw?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Find the next number in the following series:
6, 14, 26, 98, __?

O_er_t_o_

Complete the missing letters of the given word.

Why Wine Glass Stem is so long?

Can you identify if it's a murder or a suicide ?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?