If X base 10 = 10101 base 2, find X?

If X base 10 = 10101 base 2, find X?

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Answers (3)

Oyin
1 week ago
Solution:Xbase 10=10101 base 2,first deal with 10101 base 2 =1x2^4+0x2^3+1x2^2+0x2^1+1x2^0 16+0+4+0+1=21 base 10
2 |21
2|10 r 1
2 |5 r 0
2 |2 r 1
2|1 r0
|0 r 1 from down to up we get =10101.Therefore, x=21.
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