I am pretty sure this is right
Answer:
the answer is 15
Step-by-step explanation:
i actually did the test :D
Answer:
Option C,
Calculating permutations can be used in all of following except assisting computer programmers
Step-by-step explanation:
Permutations is basically used in cases where there is some sort of patterning involved in it.
In case of seating arrangements at a wedding, survey and placing items into a display some kind of pattern will be followed.
Hence, option C
Answer:
1557/1892
Step-by-step explanation:
Your calculator can do this:

It would be rounded to 20.
hope this helps you