Today is Wednesday. Which day of the week will it be 100 days from today?

SaturdayCorrect answerYour answerFridayCorrect answerYour answerThursdayCorrect answerYour answerWednesdayCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

The days repeat every 7, so only $100 \bmod 7$ matters: $100 = 7 \times 14 + 2$ .
Two days after Wednesday is Friday.

Worth noting

Saturday counts 3 days on, as if 100 left remainder 3.

Ten questions from Modulo Arithmetic & Congruence, at your own pace.

Ten questions from Modulo Arithmetic & Congruence, at your own pace.

Explanation