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Which number has distance √41 from 0 and lies to the left of 0 on the number line?

Answer and explanation

Correct answer: -√41

The governing concept is directed distance on the number line. A point whose distance from zero is √41 can have either coordinate √41 or −√41, since equal distances occur on opposite sides of zero. The additional condition “to the left of 0” selects the negative coordinate, so the answer is −√41. Option B is correct. Option A has the required distance but lies to the right of zero. Options C and D are not correct because the distance of either 41 or −41 from zero is 41, not √41. Thus both magnitude and direction must be used. This distinction is important: ordinary distance is nonnegative, while the coordinate records the side of zero through its sign.

Related tags

Number LineDirected DistanceIrrational NumbersClass 10 MathematicsRepresenting Real Numbers On The Number LinePolynomialsMathematicsClass 10 Mcq

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