50 numbers are written in a row. Every number starting with the third equals the sum of all the preceding numbers. What will you get if you divide the 23rd number by the 15th?

Assume the first two numbers are A and A

The row will be

A, A, 2A, 4A, 8A

For the nth number in the list it can be represented in the way number= for any n≥3

Using this formula the answer of the question can be obtained with division of the 23th and 15th term

Simplify

=

=

=

=

=256

Done!

3; 9 is 8 to -4

step-by-step explanation:

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