Math, asked by industry7627, 8 months ago

A box contains 5 detective and 15 non-detective bulbs. Two bulbs are chosen at random. Find the probability that both the bulbs are non-defective.

A) 5/19 B) 3/20 C) 21/38 D) None of these

Answers

Answered by deepakkumarkant2
2

Answer:

HEY mate I hope that you have a little knowledge of permutations and combinations.

If not then note it the formula for combination ncr=n factorial/R factorial *(n-r) factorial.

SP LET'S SOLVE YOUR QUESTION.

HOPE IT HELPS YOU. PLZ MARK IT IS BRAINLIEST

Attachments:
Answered by yamminipathy2000
2

Answer:

C)21/38

Step-by-step explanation:

total bulbs =20

selecting from total bulbs=20C2=190

non defective bulbs =15

selecting from non defective bulbs=15C2=105

probability that both bulbs are non defective=105/190=21/38

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