Math, asked by Rehan2002, 1 year ago

can anybody help me faster

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Answered by anuritha
1
An equation ax2 + bx + c = 0 has real roots when b2 is greater than 4ac   

There are 6×6×6 =216 ways to choose coefficients 

 when b=1 there is no root

when b=2 there are  real roots  when a=1 and c=1
( i.e 1 way)

when b =3     ( 1,1),( 2,1) and (1,2) 

(satisfies condition  3 way)

 when b= 4     (1,1),( 1,2),( 2,1),(2,2),(1,3),( 3,1),(1,4),(4,1) 

(satisfies the condition  8)

ways  when b=5      (1,1),( 1,2),( 2,1),(2,2),(1,3),( 3,1),(1,4),(4,1),(1,5),(5,1) (1,6)( 6,1), (2,3), (3,2),( 2,2) 

( satisfies 14 ways  )

when b=6      (1,1),( 1,2),( 2,1),(2,2),(1,3),( 3,1),(1,4),(4,1),(1,5),(5,1) (1,6)( 6,1), (2,3), (3,2),( 2,2)(2,4), (4,2),(3,3 )−

( 17 ways  ) 

total no of outcomes =43  Probability = 43/216

Hope this information will clear your doubts about this topic

anuritha: hope this answer helps you
Rehan2002: no I just found out the answer is wrong it is 43/216
anuritha: oh i am sorry for that
Rehan2002: welcome
anuritha: sorry for that mistake ,hope this answer helps u
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