Question : The least six-digit number, which is a perfect square, is:

Option 1: 100489

Option 2: 10000

Option 3: 100256

Option 4: 100255

Question : Let $x$ be the least number which when subtracted from 10424 gives a perfect square number. What is the least number by which $x$ should be multiplied to get a perfect square?

Option 1: 3

Option 2: 2

Option 3: 6

Option 4: 5

Question : If a perfect square, not divisible by 6, is divided by 6, the remainder will be:

Option 1: 1, 3 or 5

Option 2: 1, 2 or 5

Option 3: 1, 3 or 4

Option 4: 1, 2 or 4

Question : If $4x^2-12x+k$ is a perfect square, then the value of $k$ is:

Option 1: 2

Option 2: 9

Option 3: 12

Option 4: 10

Question : Find the least number divisible by 2, 3, 5, 6, 9, and 18 which is a perfect square.

Option 1: 900

Option 2: 400

Option 3: 144

Option 4: 3600