Can you find out the total number of triangles in the given figure?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

What is harder to catch the faster you run?

How many times can you subtract the number two from the number fifty?

If you can spot the hidden clock quickly, you are often those with high IQs and exceptionally keen observation skills. You excel in noticing the finest details that others might miss and can process visual information at lightning speed.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

How many letters are in the alphabet?