A considerable number of people get it wrong.
Can you solve it?
Discussion
18
12
18. Final answer
12
12
XII
Literally 18. Could be 12 if it is inconclusively based on the continuing pattern
Yes
18
12
18
18
12
Yn = n²+n
n=1, y=2 = 1²+1 = 2
n=2, y=6 = 2²+2 = 6
n=3=, y=12 = 3² + 3 = 12
n=4=, y=20 = 4² + 4 = 20
n=5=, y=30 = 5² + 5 = 30
n=6=, y=42 = 6² + 6 = 42
n=7=, y=56 = 7² + 7 = 56
n=8=, y=72 = 8² + 8 = 72
n=9=, y=90 = 9² + 9 = 90
12.
n*(n+1) , I am going with 12
18
30
This puzzle is as tricky as a 'boat for sale' ad! But if you look closely, the pattern seems to be multiplying the left number by a decreasing value. For example: 9×8=72, 8×7=56, 7×6=42, so 3×2=6. What do you think?
12
The answer is 12, but the real puzzle is why we're doing math on a beautiful day instead of being on the water. The only equation I want to solve is: My Time + Perfect yacht for sale https://www.yachttrading.com/ = Unforgettable Memories. Now that's a problem worth thinking about!
Num = num*(num+1)
That means 3=12
18
18! The one after that should 6. Puzzles are great!
12, 18, or 30. Many different patterns on this one.
12 because n*(n+1)
18 because n* number above
30 because the RHS steps down by a specific rate
21,000,000
18
10x9=90
9x8=72
8x7=56
7x6=42
6x3=18
12
12
6
12
30 Love how my brain focuses on the outcome pattern vs what’s going on in order to get the solution. Good fun!
The first four are false. The last one is equal to 3.
3=18