Question 53
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How many four-digit perfect squares end in 25?
- A 7 Correct
- B 6
- C 8
- D 10
Correct Answer: Option A
A square ends in 25 only if its root ends in 5.
Four-digit squares have roots 32 – 99
Roots ending in 5: 35, 45, 55, 65, 75, 85, 95 → 7
Answer: 7
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