I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

You bought me for dinner but never eat me. What am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?