In a certain number system, the number '101' represents the decimal number 5. Wh

Practice Questions

Q1
In a certain number system, the number '101' represents the decimal number 5. What does '111' represent in the same system?
  1. 6
  2. 7
  3. 8
  4. 9

Questions & Step-by-Step Solutions

In a certain number system, the number '101' represents the decimal number 5. What does '111' represent in the same system?
  • Step 1: Understand that '101' is a number in a certain number system, which is binary (base 2).
  • Step 2: Convert '101' from binary to decimal. In binary, '101' means: 1*2^2 + 0*2^1 + 1*2^0 = 4 + 0 + 1 = 5.
  • Step 3: Now, we need to find out what '111' represents in the same binary system.
  • Step 4: Convert '111' from binary to decimal. In binary, '111' means: 1*2^2 + 1*2^1 + 1*2^0 = 4 + 2 + 1 = 7.
  • Step 5: Therefore, '111' in this number system represents the decimal number 7.
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