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

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Count the number of triangles in the given picture.

Can you solve the photo plexer logic ?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Solve below popular number sequence
314 159 265 358 979 323 846 ?