# 1, 8, 5, 11, 7, 12, 7 (?) what is the next number in this sequence?

Answers

Always test the relationship between two numbers next to each other in the sequence. Here we see that 8 = 1 + 7, 5 = 8 -3, 11 = 5 + 6, 7 = 11 - 4, 12 = 7 + 5, 7 = 12 - 5, so that the steps are: +7, -3, + 6, -4, + 5, -5. So we are alternating between addition and subtraction, the added numbers are getting one smaller each time, the subtracted numbers one larger each time. The next number is therefore 11 = 7 + 4.

21 August 2012

A cut piece of ribbon is 21 inches long. The piece of ribbon is 15% of the original length of the ribbon.
How long was the original length of ribbon?
Enter your answer in the box.

20 February 2021

Hello Google solve this math expose to power 2 - 5 x + 4=0

15 March 2021

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