JAMB 1987 · UME · Q1

Number bases

Convert $241_5$ to base 8.

Worked solution (try it first)

Change to base ten: $241_5 = 2 \times 25 + 4 \times 5 + 1 = 71$ .
Divide by 8: $71 = 8 \times 8 + 7$ , and $8 = 1 \times 8 + 0$ .
Read the digits from the top power down: $107_8$ , option B.

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