1).the marks obtained by suresh in english,math & sciencec are in the ratio 1/2 : 1/3 : 3/5 if his total score is 860 then his marks in english is
a). 160,b). 300,c). 228 d). 312.
2). if P(A)=a, P(B)=b then P(AUB)' = ?
a). 1-(a+b-ab)
B). 1-(a-b+ab)
c). a+b-ab
d). a+b-2ab.
300. we have to take the common base. base = 30. (15/30, 10/30, 18/30)
15+10+18=43. Marks in english = 860*15/43= 300
AUB= a+ b-ab
(AUB)'= 1- (a+b-ab)
Q NO 1 ANS b)300
Q NO 2 c)a+b-ab
| Originally posted by : sudhanshu bagaria | ||
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Q NO 1 ANS b)300 Q NO 2 c)a+b-ab |
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