what is 4+4=?

Question

to get ur attention, i have to ask my question as 4+4= ?
actually question is quite confusing.
u need to explain in mathematical way.
suppose i have to answer 10 questions, each question has 4 options, i have to pick up one correct answer from these 4 options. i will get 4 marks for correct one, but, if i will pick up wrong one, i get -1 marks. so in this case, what would b beneficial for me, whether to attend all or to leave those which i dont know. i would not get any marks if i dont attempt a particular question. i request all u to have mathematical expalnation. good luck

u need not to answer 4+4, i just ask to attract u. question is in front of u. forget about 4+4

Answer 1

Assume you don't know any of the answers and simply guess all of the answers. The probability of getting some answers right is there. If you get 2 right and 8 wrong, your score is 0. If you get 3 or more right, you will have a positive score. So, it is worth guessing even with negative marks. And if you definitely know the answers for say 6 questions, that is 24 points for you and it is definitely worth guessing the answers for the balance 4 even with negative mark. If you get 1 right and 3 wrong, you will still get +1 point.

One tip usually given if you don't know the answer is to mark b or c. The probability of getting them right is a little higher than 1 out of 4.

Answer 2

If you answer the ones you're sure of, you get 4 points each, if you guess at the ones you don't know, the probability is that you will get 1 out of 4 right.

So for every right answer you get +4, every wrong answer is -1. Statistically, if you guess on 8 questions, chances are you'll get 2 right and 6 wrong, resulting in a net score of +2 for the guessed questions. If you know the other 2, that will be 8 points for a total of ten.

If you're not sure less than 4 questions, though, leave them blank. Probability dictates you might get them all wrong.

Answer 3

As they tell you in all the SAT classes (or "u" as you like to annoyingly type it), it's best if you don't answer the questions you don't know. There is the chance that you could guess and get it right, but the probability of that for a given question is only 1/4.

If you answer all the questions on the test without leaving any blank, and only get C of them correct, then you get 10-C of them wrong and your score (out of a total of 40 points) is 4c - (10-c), which is 5c - 10. As a percentage this is (5c - 10)/40, or (c - 2)/8. You'll find that c=6 gives 50% and c=7 gives 62.5%. If we consider 60 to be passing, then my random guessing you'd have to get no more than 3 wrong. That probably isn't going to happen!

Answer 4

4+4= x

Answer 5

LOOK:

One Unattempted question= you loose 04 marks
One attempted question have two chances:
1). right answer= you get 04 marks
2). Wrong answer= you loose 05 marks (one mark of plenty)

NOW, Let you have attempted 05 questions,
If,
Worse Condition
05 wrong= you loose 25 marks i.e. 5*4+5*1
But,
04 wrong= you loose 20 marks i.e. 4*4+4*1 you did one (01) right that give you 4 marks
Net loose marks = 20-4=16

Now See
if you unattempt all five (05) question
you loose 5*4=20 marks

loosing16 marks(by giving one answer right) is less than 20 marks(by not attempting any question)

Hence prove that if you are going to attempt five questions, you have to answer at least one question right in order to get safe side.
So, you can attempt as many question as you want but you have to maintain the ratio 5:1 i.e. every five attempted questions should have at least on right answer

Answer 6

8

Answer 7

The others have answered the "guess or don't guess" question well, but I would like to add that 4 + 4 = 9 (for large values of 4)!

Answer 8

4 + 4 = 8
cube root of 8 is 2.
when will you stop asking these questions?
how many points have you wasted by now dude?

Answer 9

see if u dont know the answer then leave it b'coz going logically if u give all the wrong answer then u will get -10 & if u dont give any answer then u will get 0 so according to me go ahead & leave the Q. WHICH U DONT KNOW

Answer 10

It is simply 8.