Question

1. which binary values are off? (select more than one.)

8 \t4 \t2 \t1
0 \t0 \t1 \t1
□ 8 is off
□ 1 is off
□ 4 is off
□ 2 is off

1. what group of numbers are binary:

○ 10,20,30,40,50,60,70,80
○ 6,12,18,24,30,36,42,48
○ 1,2,4,8,16,32,64,128

Explanation:

Step1: Identify off binary bits

In binary, 0 = off, 1 = on. The table shows:

• 8: 0 (off)
• 4: 0 (off)
• 2: 1 (on)
• 1: 1 (on)

Step2: Identify binary base values

Binary uses powers of 2: $2^0=1$, $2^1=2$, $2^2=4$, $2^3=8$, $2^4=16$, $2^5=32$, $2^6=64$, $2^7=128$.

Answer:

For Question 11:

8 is off
4 is off

For Question 12:

1, 2, 4, 8, 16, 32, 64, 128