Ronnagrams and Quettametres have been in news recently, these are:

Question

Ronnagrams and Quettametres have been added to the International System of Units (SI).
Prefixes for Largest numbers: Ronna (10 to the power 27 zeros) and Quetta (10 to the power 30 zeros).
Prefixes for smallest numbers: Ronto (10 to the negative 27th power) and Quecto (10 to the negative 30th power).
International System of Units (SI) is the agreed global standard for the metric system.

GKToday Admin · Accepted Answer

Units of measurement

Ronnagrams and Quettametres have been added to the International System of Units (SI).
Prefixes for Largest numbers: Ronna (10 to the power 27 zeros) and Quetta (10 to the power 30 zeros).
Prefixes for smallest numbers: Ronto (10 to the negative 27th power) and Quecto (10 to the negative 30th power).
International System of Units (SI) is the agreed global standard for the metric system.