ICSE − Q & A

(x-9) : (3x+6) is the duplicate ratio of 4:9.
It means (x-9):(3x-9) = 4^2:9^2 
Am I correct?

+ 1 more questions by sk17  

Is 1.38 correct to 2 significant figures or not? I think so it is 3 significant figures.am I right?
asked by Sayantan karmakar (sk17) 7 years ago
1

CONCISE MATHEMATICS 
Revision Paper 6
Pg. 450 
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find the probability:-in a year feb may have 5 mondays A) if its a leap year B) non leap year

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find whether the points,(2,0),(4,6),(8,3) are collinear or not?
take pains and show the full working please... different people teached me abt this in a diff way and i am confused coz of that.. please help me

Do we have to learn volume of cylinder questions? I thought that it wasnt included in sylabus?