NTec - N5 Comp Sci Binary

Convert the binary number 1010 to decimal.

• 8.0
• 10.0
• 12.0
• 14.0

Answer explanation

The correct answer is 10 because (1 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 0 \times 2^0 = 8 + 0 + 2 + 0 = 10).

Convert the binary number 1101 to decimal.

• 11.0
• 12.0
• 13.0
• 14.0

Answer explanation

The correct answer is 13 because (1 \times 2^3 + 1 \times 2^2 + 0 \times 2^1 + 1 \times 2^0 = 8 + 4 + 0 + 1 = 13).

Convert the decimal number 7 to binary.

• 111.0
• 101.0
• 110.0
• 100.0

Answer explanation

The correct answer is 111 because (7 \div 2 = 3) remainder 1, (3 \div 2 = 1) remainder 1, (1 \div 2 = 0) remainder 1. Reading remainders from bottom to top gives 111.

Convert the decimal number 9 to binary.

• 1001.0
• 1010.0
• 1100.0
• 1110.0

Answer explanation

The correct answer is 1001 because (9 \div 2 = 4) remainder 1, (4 \div 2 = 2) remainder 0, (2 \div 2 = 1) remainder 0, (1 \div 2 = 0) remainder 1. Reading remainders from bottom to top gives 1001.

Convert the binary number 10010 to decimal.

• 16.0
• 18.0
• 20.0
• 22.0

Answer explanation

The correct answer is 18 because (1 \times 2^4 + 0 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 0 \times 2^0 = 16 + 0 + 0 + 2 + 0 = 18).

Convert the binary number 1011 to decimal.

• 9.0
• 10.0
• 11.0
• 12.0

Answer explanation

The correct answer is 11 because (1 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 1 \times 2^0 = 8 + 0 + 2 + 1 = 11).

Convert the binary number 1110 to decimal.

• 12.0
• 13.0
• 14.0
• 15.0

Answer explanation

The correct answer is 14 because (1 \times 2^3 + 1 \times 2^2 + 1 \times 2^1 + 0 \times 2^0 = 8 + 4 + 2 + 0 = 14).

Convert the decimal number 5 to binary.

• 101.0
• 110.0
• 111.0
• 100.0

Answer explanation

The correct answer is 101 because (5 \div 2 = 2) remainder 1, (2 \div 2 = 1) remainder 0, (1 \div 2 = 0) remainder 1. Reading remainders from bottom to top gives 101.

Convert the decimal number 12 to binary.

• 1100.0
• 1010.0
• 1110.0
• 1000.0

Answer explanation

The correct answer is 1100 because (12 \div 2 = 6) remainder 0, (6 \div 2 = 3) remainder 0, (3 \div 2 = 1) remainder 1, (1 \div 2 = 0) remainder 1. Reading remainders from bottom to top gives 1100.

Convert the binary number 10011 to decimal.

• 17.0
• 18.0
• 19.0
• 20.0

Answer explanation

The correct answer is 19 because (1 \times 2^4 + 0 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 1 \times 2^0 = 16 + 0 + 0 + 2 + 1 = 19).