People make me, save me, change me, raise me. What am I?

Decode below three cipher riddles:

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

Why is a river so rich ?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Two old friends, Jack and Bill, meet after a long time.

Three kids
Jack: Hey, how are you, man?
Bill: Not bad, got married and I have three kids now.
Jack: That's awesome. How old are they?
Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Jack: Cool..But I still don't know.
Bill: My eldest kid just started taking piano lessons.
Jack: Oh, now I get it.

How old are Bill's kids?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

When 99 is considered higher than 100?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA