Question

'A number which is '2' less than the sum of two consecutive natural numbers' is algebraically written as ______.

• A. $2-(x+1)$
• B. $2-(2x+1)$
• C. $(x+(x+1\left)\right)-2$
• D. $(2x+2)-2$

Answer 1

The correct option is C $(x+(x+1\left)\right)-2$

Consider a natural number, say $x$. Then the next natural number is $x+1$.

So, 'Add two consecutive natural numbers' is algebraically written as $x+(x+1).$

Then, a number, two less than the sum of these two consecutive natural numbers is '$(x+(x+1\left)\right)-2$'.