Question

# The set builder form of {12,23,34,45,56} is{x:x=nn+1, where n is a natural number and 1≤n≤6}{x:x=nn+1, where n is a natural number and 1≤n≤5}{x:x=nn+1, where n is a natural number and 2≤n≤6}{x:x=nn−1, where n is a natural number and 1≤n≤5}

Solution

## The correct option is B {x:x=nn+1, where n is a natural number and 1≤n≤5}Given, {12,23,34,45,56} Here every element is of the form kk+1; ∴set ={x:x=nn+1; 1≤n≤5 and n∈N

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