A numeral system (or system of numeration) is a writing system for expressing numbers, that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner.
There is no specific syllabus for Problem Solving Assessment (CBSE-PSA) Class 9. It will assess on Quantitative Reasoning, Qualitative Reasoning and Language Conventions.
Language Conventions covers uses of Practical English Grammar, Vocabulary and Comprehension reading. Problem Solving Assessment for CBSE Class 9, NCERT Class IX.
