Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The probability that a bulb produced by a factory will fuse after an year of use is 0.1. Then the probability that out of 4 such bulbs
A
None of then bulb will fuse after an year of use is 
B
More then three bulbs will fuse after an year of use is 
C
Not more then three bulbs will fuse after an year of use is 
D
All the bulbs will fuse after an year of use is 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a,b,c,d)
(1 – 0.1) 4
P(more than 3) = P(all four) = (0.1) 4
P(not more than 3) = 1 – P(more than 3) = 1 – (0.1) 4
P(all four) = (0.1) 4
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