Answer:
37
Step-by-step explanation:
Naturals numbers are 1, 2, 3, 4, 5, ....
The difference in natural numbers are "1".
2 is "1" unit away from 1
3 is "1" unit away from 2
and so on...
So, if we let the unknown natural number be "x", then it follows that the next natural number would be "x + 1".
The question says that Sam added a natural number (let it be x) with the next natural number (that is x + 1) and got 75. So we can write:
x + x + 1 = 75
Now we add like terms and solve for x:
2x + 1 = 75
2x = 75 - 1
2x = 74
x = 74/2
x = 37
So Sam thought of the number 37
