Can you count the number of triangles in the picture below?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

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

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If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I can write cow in 13 letters.

Can You?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?