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The binary number 10101 is equivalent to decimal number ___________.
- A19
- B12
- C27
- D21
Correct answer: D
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0
CCommunity
21
0
CCommunity
Solution:
Given: Binary number = 10101
Decimal number = ?
To convert a binary number into decimal number we have to multiply each term of the binary number individually by 2^n where n is the place value of each term.
(10101)2 = (1 × 2⁰) + (0 × 2¹) + (1 × 2²) + (0 × 2³) + (1 × 2⁴)
= 1 + 4 + 16
= (21)10
So, the decimal number is 21.
The correct option is D).21
Given: Binary number = 10101
Decimal number = ?
To convert a binary number into decimal number we have to multiply each term of the binary number individually by 2^n where n is the place value of each term.
(10101)2 = (1 × 2⁰) + (0 × 2¹) + (1 × 2²) + (0 × 2³) + (1 × 2⁴)
= 1 + 4 + 16
= (21)10
So, the decimal number is 21.
The correct option is D).21