If a > 0, b < 0, and c > a which of the following must be positive?
সমাধান
সঠিক উত্তর: Option C
যেহেতু a > 0, c > a তাই a=1 ও c=2 ধরি।
b=-1
অপশন a)
{1/(-1) -(-1)/2}/(2+1)
= (-1+1/2)/3
= (-1/2)/3
= -1/6 [Negative]
অপশন c)
{(2/-1)-1}/(1-2)
=-3/-1
=3 [Positive]
অপশন a)
{1/(-1) -(-1)/2}/(2+1)
= (-1+1/2)/3
= (-1/2)/3
= -1/6 [Negative]
অপশন c)
{(2/-1)-1}/(1-2)
=-3/-1
=3 [Positive]
