Home › MCQs › Basic Mathematics › Question #2832
Back to Questions
Basic Mathematics QUESTION #2832
Question 1
Evaluate: \(999^2 - 998 \times 1000\)
  • 1✔️
  • 2
  • 3
  • 4
Correct Answer Explanation
Using identity \(a^2 - b \times c\): Let \(a = 999\), \(b=998\), \(c=1000\). Note \(998 \times 1000 = (999-1)(999+1) = 999^2 - 1\). So \(999^2 - (999^2 - 1) = 1\).