What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

What do you call a fish without an eye?

O_er_t_o_

Complete the missing letters of the given word.

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?