alleryWhat is 35² without direct multiplication?
A725
B1125
C1225
D1325
Answer & Solution
Correct answer: C. 1225
For any number a5: (a5)² = a(a+1) hundreds + 25. With a = 3: 3 × 4 = 12, so 35² = 1200 + 25 = 1225.
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