Score

This is the score I got on the Tri 1 Final test.

Corrections

I am going to go over all the problems that I missed in this test.

Q19 Adding numbers in 4-bit representation

On this question, I didn’t know what type of numbers could be expressed in binary. This is because I haven’t learned binary and how to read it.

Q20 Bits needed to represent directions

On this question I forgot how to calculate the amount of bits that are needed to store information. I need to relearn this.

Q22 Decimal value not equal to given binary values

Here, I made the same mistake again because I don’t know how to read binary or calculate the value that is usually outputted by binary.

Q24 Put binary and decimal numbers in order

I made the same mistake again, because I don’t know how to read binary and be able to calculate the values that are outputted by binary.

Q36 Store even numbers in evenList

Here I made a mistake with how to initialize the value i that will lead to multiple outputs. I didn’t see that i was initialized as 1 rather than it usually being 0, so I thought that adding 2 to i would result in an even number, but it results in an odd number. Answer C is correct because it multiplies i, which is 1 by 2, making it even. After this, i is set to 2 and then the next even number can be taken and so on.

Q43 Value of x after REPEAT UNTIL block

The result is the sum of the values from 0 to 5, which is where the program stops at, not 6, which is the value of x at which the program stops running.