Eric Nicholas K's answer to angelina's Junior College 1 H1 Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
First three parts. Will do the fourth if I am able to and if I have the time.

Part (iv) is basically less than 17 defective out of 300 toys, which is the sum of 17 binomial terms (r = 0 to r = 16), will look at it again when I have more time.