How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

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

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

A man dies of old age on his 25 birthday. How is this possible?

Find the missing letter in the last circle logically in the given below picture.

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

What has many teeth, but cannot bite?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211