Question

What is the sum of the 3 consecutive whole numbers with 2n as the middle number ?

Answer 1

Answer:

6n

Step-by-step explanation:

given 2n is the middle no. of the 3 consecutive whole numbers,

=> the 3 no.s are (2n-1), 2n,(2n+1)

so their sum =  (2n-1)+2n+(2n+1)

                     = 2n+2n+2n

                     = 6n

Answer 2

The sum of the 3 consecutive whole numbers with 2n as the middle number is 6n.

Step-by-step explanation:

We know that, each whole number is increased by 1 than the previous whole number.

Since the middle number is 2n, then

• the previous whole number is 2n - 1 and
• the next whole number is 2n + 1.

Thus the required sum

= (2n - 1) + 2n + (2n + 1)

= 2n - 1 + 2n + 2n + 1

= 6n

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