Question : The least number that should be subtracted from the number 32146 to make it a perfect square is:
Option 1: 305
Option 2: 105
Option 3: 205
Option 4: 405
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Correct Answer: 105
Solution : Since, 179 × 179 = 32041 So, $\sqrt{32146}$ > 179. The number that must be subtracted to make it a perfect square is (32146 – 32041) = 105 Hence, the correct answer is 105.
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Option 3: 605
Option 4: 205
Question : What is the least number that can be multiplied by 69120 to make it a perfect cube?
Option 1: 10
Option 2: 50
Option 3: 25
Option 4: 5
Question : Find the least value for * in the number 3*7440 such that it is divisible by 12.
Option 1: 0
Option 2: 2
Option 3: 1
Option 4: 4
Question : If 5416*6 is a perfect square then the digit at * is:
Option 1: 9
Option 2: 4
Option 3: 6
Question : If 5416*6 is the perfect square, then the digit at the '*' place is:
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