Answer:
The greatest four consecutive numbers whose sum is less than 1,000 are 248, 249, 250, and 251.
Explanation:
Let x be the smallest integer. Then:
x + x + 1 + x + 2 + x + 3 < 1,000
4x + 6 < 1,000
2x + 3 < 500
2x < 497
x < 248.5, so x = 248
So we have the integers 248, 249, 250, and 251.