MathematicsNumber basesWAEC
Convert 25 (base ten) to a number in base two.
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Answer: B. 11001₂
25 = 16 + 8 + 1, so the digits for 16, 8, 4, 2, 1 are 1, 1, 0, 0, 1: 11001₂.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.