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  1. The sum of the squares of 2 numbers is 146 and the square root of one of them is √5.The cube of the other number is
    1. 1111
    2. 1221
    3. 1331
    4. 1441
Correct Option: C

First number = (√5)2 = 5
Let the second number be x.
∴  x2 + 52 = 146
⇒  x2 = 146 –25 = 121
⇒  x = √121 = 11
∴  Cube of 11 =1331



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