Question

Observe the series and write the generalised formula

$1,11,21,31,41,51$

Answer 1

Algebraic Expression :- In an algebraic expression, terms are connected together by + or operations. On the basis of the number of terms, algebraic expressions are divided into four categories: monomial, binomial, trinomial and polynomial.

In this series $1,11,21,31,41,51$

The series has common difference of $10$

The algebraic expression to satisfy this series is $1+(n-1).10$

where n contains natural numbers here

Hence, $1+(n-1).10$ this is the generalised formula for this series $1,11,21,31,41,51$