Question

convert to decimal number(1010)2 (1001)2​

Answer 1

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Answer 2

The decimal form of the binary number (1010)₂ is 10 and (1001)₂ is 9.

• To convert binary into decimal we have to multiply each binary digit with its place value and add the products.

• (1010)₂ = (1*2³+0*2²+1*2¹+0*2⁰) = (8+0+2+0) = 10. So the decimal form of  (1010)₂ is 10.
• Now, for the binary number (1001)₂ = (1*2³+0*2²+0*2¹+1*2⁰) = (8+0+0+1) = 9. So, the binary form of the binary number (1001)₂ is 9.
• Hence, the binary form of the number (1010)₂ is 10 and (1001)₂ is 9.

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