If one element in the domain mapped with more then one element in the range, the mapping is called one-to-many relation. One-to-many relations are not functions. Example: Draw a mapping diagram for the function f(x)=2x2+3 in the set of real numbers.
-7 + N = 20
move -7 to the other side
to get N by itself
-7+7+N=20+7
N=20+7
Answer:
N= 27
The greatest number of groups that can be formed is 10
5 less than 162=162-5
=157
Product=18x157
=2826
