Can you solve this picture maths equation?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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

Why is it very easy to weigh a fish?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Find the Goldfish below the given Image.

Find the next number in the sequence

5 12 24 36 ?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?