What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Look at the picture and find out which square is not linked with any of the other squares.

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

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

Which five letter word can be added at the end of below word to form a
valid word?

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There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Keyboard words are not in alphabetical order, Why?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

I am the fastest animal but cannot climb the tree. What am I?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?