ISC Class 12 Computer Science Answer Key 2025 Students must be eagerly waiting to check their answers after giving the exam. Well, here, we are providing the answer key as well as the question paper.

In the subfield of theoretical computer science called complexity theory, researchers try to pin down how easily computers can solve various types of problems.

The result purported to solve the problem of all problems—the Holy Grail of theoretical computer science, worth a $1 million prize and fame rivaling Aristotle’s forevermore.

But is there a simpler way? Questions like this one, about the most efficient way to solve problems, are at the heart of the branch of computer science known as computational complexity theory.

Pose a question to a Magic 8 Ball, and it’ll answer yes, no or something annoyingly indecisive. We think of it as a kid’s toy, but theoretical computer scientists employ a similar tool. They often ...

To answer this question – or ask a new one – email lastword@newscientist.com. Questions should be scientific enquiries about everyday phenomena, and both questions and answers should be concise.