I would try using a table. It might work better.
Answer:
6+11
Step-by-step explanation:
the negative signs cancel out
Answer:
10 ways
Step-by-step explanation:
Find out the number of ways in which 6 flags can be arranged in a row if 3 red ,2 green, and 3 yellow ?
The above question can be calculated as:
= 6!/(3! × 2! × 3!)
= 720 /(6 × 2 × 6)
= 720/(72)
= 10 ways
Common ratio = 28/7 = 4
8th term = (first term)4^7 = 114688