Question

Please answer (c) part of this question ​

Answer 1

Answer:

13/700

Step-by-step explanation:

Answer 2

Answer:

(a) no defective bulb =400.

(b) defective bulb from 2 to 6= 2+3+4+5+6+more than 6

=48+41+18+8+3+2

=120.

(c) defective bulb more than 4= 5+6+more than 6

=8+3+2

=13.

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