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In a laboratory,equal number of rats were injected with solution A.In a week ,55%of rats injected with solution A got infected with a disease and of that,equal number of rats were treated with vaccine C and D.Now,percentage of rats treated with vaccine C that recovered was 70%and that with Vaccine D was 50%,where as others died.Calculate,the number of of rats on whom the experiment was carried out in the laboratory,If the number of rats that died even after being treated with vaccine due to disease is 77.

Hindi Mai chaiye ye app

after striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen.find total distance it travels before rest if it dropped from 120 metres. explain?

Chord AB of a circle when extended meets the tangent to the circle at point P. PT is the tangent touching the circle at point T. If lengths of PT and PB are 6 cm and 4 cm respectively, what is the length of PA?

What a waste! nobody is here to clear our doubts. I posted 4 questions, moreover also informed over chats. I even reported a few questions. Nobody cares.

where are the concepts of cubes and dices in CAT 2018 online course . i didnot find the concepts any where

where are the concepts of cubes and dices in CAT 2018 course

how it is taking ab to be 1 it is not mentioned in the question 

sir how to change language

the sum of first 4 terms of an ap is 28 and sum of first 8 terms is 88, find sum of 16 terms.people are telling answer 304 but i cannot understand shortcut shown in arun sharma book.....plss explain the method