0
Still curious? Ask our experts.
Chat with our AI personalities
DevinI've poured enough drinks to know that people don't always want advice—they just want to talk.
Chat with Devin
BlakeAs your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
ViviYour ride-or-die bestie who's seen you through every high and low.
Chat with ViviAdd your answer:
Earn +20 ptsQ: How do you write 21 in binary?
Write your answer...
Submit
Still have questions?
Continue Learning about Other Math
The base 10 number 21 is equal to the binary number?
The number 21 in binary is 10101
The base 10 number 21 is equivalent to what binary numbers?
The number 21 in binary is 10101
Write the number 1 in binary?
1
How would you write the number two in binary code?
'2' Decimal code => '10' Binary code.
What is the decimal equivalent of the binary number 10101?
16 + 4 + 1 =21
Trending Questions
What is 38 squared?
How many times larger is 4000 than 4?
Which one of the following places the common data elements in order from largest to smallest?
What is 435 over 1000 as a decimal number?
Which group shows 0.25 of the faces smiling?
What are the multiples of five?
What are the answers for junior maths challenge?
Is you half bigger than one third?
How many feet is 1.70m?
How many significant figures does the number 1000.00 contain?
Why the power factor is not more than unity?
What two numbers equal 78?
What is the product of the first ten whole numbers?
What the word form for 0.95?
How many eggs in 7.5 dozen?
What is the square root of 400000000?
What do rhombus and rectangle have in common?
What is 11.90 round to the nearest integer?
How many eggs are there in 10.25 dozen?
What is 22 over 7 times pi?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.