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NDA Math Three Dimensional Geometry

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For the next two (02) items that follow:
Consider the spheres
x2+y2+z2−4y+3=0 and x2+y2+z2+2x+4z−4=0

[NDA I 2014]

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Question : 86

Total: 92

Consider the following statements:
1. The two spheres intersect each other.
2. The radius of first sphere is less than that of second sphere.
Which of the above statements is/are correct?

1 only
2 only
Both 1 and 2
Neither 1 nor 2

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