Problem: in a certain animal population , for each of the first 3 months of life , the probability that an animal will die during that month is 1 / 10 . for a group of 400 newborn members of the population , approximately how many would be expected to survive the first 3 months of life ? 
Options: a ) 240 , b ) 246 , c ) 252 , d ) 292 , e ) 298
d