Welcome to the Sequence Pattern Finder Activity

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Answer the questions below, find the letters which match the answers in the decoder grid. Then enter the password they form and claim your treasure.
We recommend a calculator for this one.

 QUESTION ANSWER LETTER 1 What is the nth term of this sequence: 47, 60, 73, 86,... 2 What is the 20th term of this sequence: 348, 337, 326, 315,... 3 What is the nth term of this sequence: 38 1/2, 39 1/4, 40, 40 3/4,... 4 What is the 16th term of this sequence: 17 1/3, 18 2/3, 20, 21 1/3,... 5 Find the nth term of this sequence: 45.92, 28.12, 10.32, -7.48,... 6 What is the seventy-fifth term of this sequence: 258 3/8, 244, 229 5/8, 215 1/4,... 7 What is the 15th term of this sequence: 1, -9.2, -19.4, -29.6,... 8 Find the nth term of this sequence: 3/8, 3 17/24, 7 1/24, 10 3/8,... 9 What is the one thousandth term in this sequence: 38, 52.92, 67.84, 82.76,... 10 What is the one millionth term of this sequence: 58, 56.7, 55.4, 54.1,...

DECODER GRID

 1,578,342.7 3/8+3 1/3(n-1) 37 1/3 45.92+17.08(n-1) 38 1/2+1/4(n-1) 139 p o e r p a 26 1/3 -842.37 -141.8 14,943.08 38 1/2+3/4(n-1) 14,940 i y d t m c -1,299,940.7 47+13(n-1) 159 45.92-17.8(n-1) 3/8+1/3(n-1) -805 3/8 s g x o i f

When you KNOW the password

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