Sandra has ribbons that are 3/4 yard, 2/6 yard, 1/5 yard, and 4/7 yard long. she needs to use ribbon longer than 2/3 yard to make a bow. which length of the ribbon could she use for the bow?

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents