What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

In the image given, you can find several triangles. Can you count them all?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What is the next shape from answers A, B, C, and D figure?