How many triangles are there on the puzzle below?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

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

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Can you identify the hidden rebus in the image below?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

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

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

I don't get anymore wetter, no matter how much rain falls on me.

I look at you, you look at me I raise my right, you raise your left. What am I?