math

how to approach such binary problems?

iTeachChem Helper•6/10/25, 12:10 PM

@Apu

iTeachChem Helper•6/10/25, 12:10 PM

Note for OP

+solved @user1 @user2...

+solved @user1 @user2...

to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.

SirLancelotDuLac•6/10/25, 12:13 PM

2003 in binary is 11001011111. Now for any k_th digit number where k<11, it is easy to find by symmetry the number of such numbers.

SirLancelotDuLac•6/10/25, 12:13 PM

As for 11-digit numbers, you'll have to case-work a bit.

YesArnavPie123OP•6/10/25, 12:13 PM

oh i got it

YesArnavPie123OP•6/10/25, 12:13 PM

thanks

YesArnavPie123OP•6/10/25, 12:14 PM

+solved @SirLancelotDuLac

iTeachChem Helper•6/10/25, 12:14 PM

Post locked and archived successfully!

Archived by

@885013580024528941 (885013580024528941)

Time

June 10, 2025

Solved by

@1075951732460376214 (1075951732460376214)