He can only pick 7 different groups because 2 times 7 is 14, and there are 15 people in all.
Hope this helps. c:
2744 is the answer. can be written as 14^3 just in case you need to know that.
Answer:
The answer is the option
Step-by-step explanation:
see the attached figure with letters to better understand the problem
we know that
-----> by vertical angles
-----> given problem
-----> given problem
substitute