## mathmath333 one year ago 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 ?

1. 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}}

2. anonymous

d

3. mathmath333

yea correct

4. mathmath333

how did u got that

5. anonymous

15+2-1=17 :)

6. mathmath333

what is that ?

7. 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.

8. mathmath333

ur IQ seems higher than me

9. anonymous

Lol, says the mathlete.

10. ganeshie8

+1 for attempt

11. mathmath333

+2

12. ganeshie8

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

13. mathmath333

2

14. ganeshie8

think again

15. mathmath333

"each question has 2 choice"

16. ganeshie8

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

17. mathmath333

3

18. imqwerty

:P

19. mathmath333

interval

20. imqwerty

So did u get the answer now?

21. mathmath333

no

22. imqwerty

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

23. imqwerty

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

24. 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

25. mathmath333

ok

26. imqwerty

What is the full form of O.K?

27. mathmath333

good question

28. mathmath333

what is the full form of IMQ

29. freckles

okay

30. 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

31. freckles

I don't know what IMQ stands for

32. imqwerty

:)

33. 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.

34. mathmath333

IMQ-> imquerty->@imqwerty

35. imqwerty

:O

36. freckles

ah

37. mathmath333

lol

38. 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)

39. mathmath333

yes i got that

40. 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

41. mathmath333

what is that ^

42. freckles

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

43. mathmath333

trolling lol

44. imqwerty

Nope :) It is nt like that

45. imqwerty

Is it trolling or troling :)