Plan B Forum

4/7, not my best subjects.

7/7, lots of math and science so easy.

My downfall, maths was never my strong point.

7/7.  Since I'm almost 62 years old, I should be at least 3.8 times smarter than a 16-year-old.
(although I will admit to taking a great deal of time on the French language question)

-"BB"-

6/7 -

Missed the Aenid question...

6/7...I know virtually no French, so I'm not surprised.

It also took me an embarrassingly long time to figure out the binary one (Of the 10 kinds of people in the joke, I guess I'm the wrong one. )

Lord Jim wrote:6/7 -

Missed the Aenid question...

It's uncanny.....

7/7.

Gob wrote:

BBC GCSE Quiz

4/7, not my best subjects.

Odd use of the plural there....

6/7 and I have no idea how to convert binary to decimal (and I'm surprised anyone here can, since it wasn't taught when I was in school, and I took all the higher maths).

Guinevere wrote:6/7 and I have no idea how to convert binary to decimal (and I'm surprised anyone here can, since it wasn't taught when I was in school, and I took all the higher maths).

That question was easy - SPOILER ALERT - you just pick the one that ends with an even number. Er... because... because... the binary number ended with 0 and 1 is odd while zero is sort of even. If you squint like this.

That's how I figured it.

MajGenl.Meade wrote:

Guinevere wrote:6/7 and I have no idea how to convert binary to decimal (and I'm surprised anyone here can, since it wasn't taught when I was in school, and I took all the higher maths).

That question was easy - SPOILER ALERT - you just pick the one that ends with an even number. Er... because... because... the binary number ended with 0 and 1 is odd while zero is sort of even. If you squint like this.

So what happens if two or more answers end in an even number?  You do "eeny, meeny, miney, mo"?

You need to know what each digit represents.  Going from right to left, each digit in a binary number (either a one or a zero) represents a power of two.  First digit = 2ᴼ, second digit = 2¹, third digit = 2², fourth digit = 2³, fifth digit 2^4, and so on.  So going from right to left you look to see which of the digits are a 1; this indicates that the total number contains that power of 2.  So the example given — 10111010 — contains the following:
2^1 = 2
2^3 = 8
2^4 = 16
2^5 = 32
2^7 = 128

Add them up (2 + 8 + 16 + 32 + 128) and you get the denary (which is a fancy term that means 'base 10' or 'decimal') number of 186.

And I learned this back in a 4th or 5th grade Catholic school math class back in 1964 (although I'll admit I didn't fully grasp it until about 4 or 5 years later, in high-school algebra).

-"BB"-

That's the way I learned as well, although I'm not sure when. I kind of viewed it like Roman Numerals--no practical use (except for the years of movies).

So the example given — 10111010 —

or BA in hex

Pulled a rabbit out of the hat
Your score:
6/7

Bicycle Bill wrote:So what happens if two or more answers end in an even number?  You do "eeny, meeny, miney, mo"?

The question didn't arise, Bill. There were two odd and one even. HAD it arisen, the emmm method would have worked better for me than whatever it was you explained so carefully (and I am sure very accurately)

I recognize some words but that was about it

MajGenl.Meade wrote:That question was easy - SPOILER ALERT - you just pick the one that ends with an even number. Er... because... because... the binary number ended with 0 and 1 is odd while zero is sort of even. If you squint like this.

DOH! Now I feel *REALLY* stupid! I did it the hard way, as per Bill's explanation...

8/7

I see you had difficulty with the math questions...