How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

In the image below, can you find the value of an angle(y)

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

What jumps when it walks and sits when it stands?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

Out of four images which one is the odd one out?

Can you write down eight eights so that they add up to one thousand?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

How can you take 2 from 5 and leave 4?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?