Find the Highest commonFactor(HCF) of 12,18 and 48

the greatest common factor for 12, 18, 48 is 6.

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

answer4 to the second power is 16

and 4 to the third power is 64,