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  1. The least integer which should be added to 1000 so as to make it a perfect square is
    1. 10
    2. 18
    3. 24
    4. 89
Correct Option: C

(31)2 < 1000 < 322
32 × 32 = 1024
∴  Required number
= 1024 – 1000 = 24


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