Their is a question paper consisting of 15 questions .
Each question has an internal choice of 2 options .
In how many ways can a student attempt one or more
questions of the given fifteen questions in the paper ?

- mathmath333

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- mathmath333

\(\large \color{black}{\begin{align}
& \normalsize \text{Their is a question paper consisting of 15 questions .}\hspace{.33em}\\~\\
& \normalsize \text{Each question has an internal choice of 2 options .}\hspace{.33em}\\~\\
& \normalsize \text{In how many ways can a student attempt one or more}\hspace{.33em}\\~\\
& \normalsize \text{questions of the given fifteen questions in the paper ?}\hspace{.33em}\\~\\
& a.)\ 3^{7} \hspace{.33em}\\~\\
& b.)\ 3^{8} \hspace{.33em}\\~\\
& c.)\ 3^{15} \hspace{.33em}\\~\\
& d.)\ 3^{15}-1 \hspace{.33em}\\~\\
\end{align}}\)

- anonymous

d

- mathmath333

yea correct

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## More answers

- mathmath333

how did u got that

- anonymous

15+2-1=17 :)

- mathmath333

what is that ?

- anonymous

right away looking at the question and the answers I could tell which is which, all i did was add 15 and 2 and I saw that none of them were close to it besides D so i added 3^15-1 and got 17.

- mathmath333

ur IQ seems higher than me

- anonymous

Lol, says the mathlete.

- ganeshie8

+1 for attempt

- mathmath333

+2

- ganeshie8

so there are 15 questions,
how many choices do you have with each question ?

- mathmath333

2

- ganeshie8

think again

- mathmath333

"each question has 2 choice"

- ganeshie8

remember there is also a choice of attempting the question
you may choose not to attempt a question

- mathmath333

3

- imqwerty

:P

- mathmath333

interval

- imqwerty

So did u get the answer now?

- mathmath333

no

- imqwerty

the kid can attempt the a question in 3 ways ok till now :)

- imqwerty

Nd then hes has to do 15 questions so number of ways of doing it=3x3x3x....fifteen times

- imqwerty

But then there is a case where the kid leaves the paper empty :) so we give him a - 1 cause we will not consider that he attempted the paper. So we get the answer -
3^15-1

- mathmath333

ok

- imqwerty

What is the full form of O.K?

- mathmath333

good question

- mathmath333

what is the full form of IMQ

- freckles

okay

- freckles

that made sense in your justification of taking one away from the 3^(15)
you know because if he doesn't answer any of them then it is not really consider an attempt
but I have seen people attempt tests and write nothing on it except a drawing :p

- freckles

I don't know what IMQ stands for

- imqwerty

:)

- freckles

huh I always thought okay was the proper word for slang ok. But ok is actually okay. Like I think they use the word ok more actually. And ok is consider its full form. It just also has different forms that are used such as okay.

- mathmath333

IMQ-> imquerty->@imqwerty

- imqwerty

:O

- freckles

ah

- mathmath333

lol

- freckles

I just realize I completely missed something in your question @mathmath333
oh you know what they thingy does say how can the person attempt one or more questions anyways so that part wasn't a guessing thing
if it said how can the person attempt 0 or more questions then it would have been 3^(15)

- mathmath333

yes i got that

- imqwerty

:) how to get slim in jst a week?
.
The answer is simple :)
Jst turn ur head left nd then right then left nd so whenever u r given food

- mathmath333

what is that ^

- freckles

does doing that much turning cause you to lose that much calories

- mathmath333

trolling lol

- imqwerty

Nope :)
It is nt like that

- imqwerty

Is it trolling or troling :)

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