Which of the following are reasons that early number systems using thousands of

Question

Which of the following are reasons that early number systems using thousands of names and symbols were not practical?
(Select all that apply.)

A- Teachers ran out of paper when they tried to write them all down.

B- Arithmetic was difficult.

C- There was a limit to the largest number possible.

D- It was difficult to remember all of the names and symbols.

___________________________________________

When people first began using multiple symbols to represent numbers, they would write the same symbol over and over to represent multiples of a particular number.

True or False
___________________________________________

All multiples of 5 end in the digit zero in the Base 5 number system.

True or False

___________________________________________

Hexadecimal uses 16 symbols, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. The base of 16 is larger than in binary, decimal, or octal. This has what advantage?

A- Fewer unique symbols or digits are required in the hexadecimal system than in systems with smaller bases.

B- Larger numbers can be represented with fewer digits in the hexadecimal system than in systems with smaller bases.

C- It is a positional system that does not require a symbol for the multipliers like binary and decimal.

D- None of these.
___________________________________________

To find the decimal value of a number in the binary, octal, or hexadecimal number systems, the procedure is to calculate __________.

A- The sum of the digits.

B- The sum of the digits times multiples of 10.

C- The sum of all digits times their multipliers.

D- None of these.

___________________________________________

Convert the number to decimal form.

21Etwelve (T = 10ten, E = 11ten)

A- 311
B- 168
C- 3732
D- 2652
___________________________________________

Explanation / Answer

1) B and D are correct

( A not correct, because no paper in the early era!)

(C not correct because there was no limit to the largest number possible)

2) TRUE: for example MMXVII represents 2 x 1000 + 10 +7 =2017

3) TRUE: This is the case in for any base b: numbers divisible by b end in 0.

4) Only B is correct .

5) C

6) question not clear (which base?)

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