List of top Mathematics Questions on coordinates of a point in space asked in KEAM

(3, −4) and (4, −a) lie on line. Find a?
If \( n(B) = 61 \), \( n(A \cup B) = 99 \), \( n(A \cap B) = 28 \), find \( n(A') \).
11\( (10P_7) \) =
The function \[ f(x) = x^{3/5}(5x - 12) \] is increasing in the set:
Point equidistant from \( (2,0,3), (0,3,2), (0,0,1) \)
Point equidistant from \( (2,0,3), (0,3,2), (0,0,1) \)
The angle subtended at the point $(1, 2, 3)$ by the points $P(2, 4, 5)$ and $Q(3, 3, 1)$, is: