What should come in place of the blanks in the binary number (10_

What should come in place of the blanks in the binary number (10_
| What should come in place of the blanks in the binary number (10_1001_11)2, to make its decimal value 715?

A. 0, 0

B. 0, 1

C. 1, 0

D. 1, 1

Please scroll down to see the correct answer and solution guide.

Right Answer is: C

SOLUTION

Data: (10_1001_11)2

Option 1: (0, 0)

(10_1001_11)2 = (1001001011)2

(1001001011)2 = 1 × 29 + 1 × 26 + 1 × 23 + 1 × 21 + 1× 20 = 587

Option 2: 0, 1

(1001001111)2= 1 × 29 + 1 × 26 + 1 × 23 + 1 × 22 + 1 × 21 + 1× 20 = 591

Option 3: 1, 0

(1011001011)2 = 1 × 29 + 1 × 27 + 1 × 26 + 1 × 23 + 1 × 21 + 1× 20 = 715

Option 4: 1, 1

(1011001111)2 = 1 × 29 + 1 × 27 + 1 × 26 + 1 × 23 +  1 × 22 + 1 × 21 + 1× 20 = 719

Option 3 is correct.