# add two consicutive natural numbers and find the number, one less than this

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**Step-by-step explanation:**

Let the two consecutive natural numbers be a & (a+1). Now the number one less than this will be (2a + 1) - 1 = 2a + 1 - 1 = 2a. i.e. twice the first number. Therefore, the number one less than the sum of two consecutive natural numbers will be twice the sum of the smaller number.

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