Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

What is the word or phrase?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?