You rang?

I rang up the customer's purchase at the cash register.

Gunshots rang out in the distance.

He has a random-ish sense of style.

He has a random-like personality.

Random-access memory is a type of computer memory that can be accessed randomly.

The developer refused to sell the ransom strip of land.

The kidnappers demanded a high price for the ransom strips.

Random walks are a fundamental concept in probability theory.

Spearman's rank correlation coefficient is a statistical measure of the strength and direction of the monotonic relationship between two variables.