1
NDA Mathematics 3 September 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the equation of the sphere concentric with the sphere x2 + y+ z2 - 2x - 6y -8z - 5 = 0 and which passes through the origin?
A
x2 + y+ z2 - 2x - 8z = 0
B
x2 + y+ z2 - 2x - 6y = 0
C
x+ y+ z- 6y - 8z = 0
D
x2 + y+ z2 - 2x - 6y - 8z = 0
2
NDA Mathematics 3 September 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
A point P lies on the line joining A(1, 2, 3) and B(2, 10, 1). If z-coordinate of P is 7, what is the sum of other two coordinates? 
A
-15
B
-13
C
-11
D
-9
3
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Consider the following for the next two (02) items that follow :

Let A(1, -1, 2) and B(2, 1, -1) be the end points of the diameter of the sphere

x2 + y2 + z2 + 2ux + 2vy + 2wz - 1 = 0.  

What is u + v + w equal to ? 
A
-2
B
-1
C
1
D
2
4
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Consider the following for the next two (02) items that follow :

Let A(1, -1, 2) and B(2, 1, -1) be the end points of the diameter of the sphere

x2 + y2 + z2 + 2ux + 2vy + 2wz - 1 = 0.  

P(x, y, z) is any point on the sphere, then what is PA2 + PB2 equal to ?  
A
15
B
14
C
13
D
6.5
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12