1 answer
1
There are six runners in the 100-yard dash. How many ways are there for three medals to be awarded if ties are possible? (The runner or runners who finish with the fastes...
6 answers
2
Prove by induction that the expression for the number of diagonals in a polygon of $n$ sides is $\frac{n(n-3)}{2}$
4 answers
5
1 answer
8
If R is any relation:is Rno R (composite of Rn and R) the same as R o Rn?