It is possible to have four coplanar points, no three of which are collinear?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅

Shared decision making is always a positive strategy to take