MathComputational mathNumeral systems

Converting from binary to decimal

Ann's mistake

Report a typo

Your friend Ann is learning to convert from binary to decimal. She takes the number 0111101 and writes the following:

0 $\cdot$ 1 + 1 $\cdot$ 2 + 1 $\cdot$ 4 + 1 $\cdot$ 8 + 1 $\cdot$ 16 + 0 $\cdot$ 32 + 1 $\cdot$ 64 = 94

Where is she mistaken?

Select one option from the list

She wrote 9 instead of 8

She didn't add one of the numbers

She forgot to reverse the order of powers

She listed the incorrect powers

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