Question

A box contains 12 electric lamps of which 5 are defective. A man selects three lamp at random. What is expected number of defective lamp in his selection?

a. 1.25
b. 2.50
c. 1.05
d. 2.03​

Answer 1

$\huge\mathfrak\red{Answer :) }$

2.03 is the answer of this question ok

Answer 2

Answer:

Option d is the correct answer