Question

what is criptarithms and different typs

Answer 1

Any plant that reproduces using spores (rather than seeds), formerly placed in the taxonomic group Cryptogamae, which included ferns, mosses, algae, fungi, lichens and liverworts.

Answer 2

A cryptarithm is a type of mathematical puzzle in which most or all of the digits in a mathematical expression, such as a sum, are substituted by letters or other symbols.