Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

Home / Doubts and Solutions/CBSE/Class 12 Science/Mathematics

if each element of a second order determinant is either 0 or 1 what is probability that value is

Asked by 15th February 2009, 10:47 AM
Answered by Expert
Answer:

let the matrix entries be a,b,c,d

then total no. of matrices = 24 (for each entry we have two choices 0 or 1 )

determinant of the matrix = ad - bc

it wil be positive only if a and both are 1 and either or both of b or c is zero.

the no. of such matrices will be 3. (a=1,d=1 and (b=0,c=0) / (b=0,c=1) / (b=1,c=0) )

so desired probability = 3/16

Answered by Expert 17th February 2009, 5:06 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Previous Question
Next Question
Your answer has been posted successfully!

Free related questions

A shopkeeper has 3 varieties of pens 'A','B' and 'C'. Meena purchased 1 pen of each variety for a total of Rs.21.Jeevan purchased 4 pens of 'A' variety, 3 pens of 'B' variety and 2 pens"c" variety for Rs.60. while Shika purchased 6 pens of 'A' variety, 2 pens of 'B' variety and 3 pens of 'C' variety for Rs.70. Using matrix method, find cost of each variety of pen.(HOW TO SOLVE THIS QUESTION)
8th August 2016, 11:13 AM
What is the approch of solving problems on integration? Please give some tips.
11th August 2016, 10:18 AM
dy/dx is positive if y increase as x increase and negative if y decreses as x  its mean its a ncrt book question ncrt 1 book chapter 6 page 196
what this statement means and where it would be drive from
18th August 2016, 3:23 PM

If y 1/m+ y -1/m=2x,show that (x2-1)Y2+xY1=m2  y

28th August 2016, 10:15 PM
Let f(x) and g(x) be twice differentiable functions on [0,2] satisfying f''(x)=g''(x),f'(1)=6,f(2)=3 and g(2)=9.Then what is f(x)-g(x) at x=4 equal to?
 
 
8th September 2016, 11:17 AM
RELATED STUDY RESOURCES :
CBSE Class-12-science QUESTION ANSWERS

Chat with us on WhatsApp