Question
20 defective LED bulbs were mixed with 180 working LED
bulbs. One bulb is selected randomly. What is the probability that the selected bulb is defective?Solution
Number of defective LED bulbs = 20
Total number of LED bulbs = 180 + 20 = 200
Required probability = (20/200) = (1/10)
More Probability Questions
√(?) ² = √7396 - √6889
Simplify the following expressions and choose the correct option.
[(7/8 of 256) ÷ 4] + (3/5 of 150) = ?
What will come in the place of question mark (?) in the given expression?
? ÷ (33 - 12 X 2) = (24 + 50 - 38) ÷ ?Â
4.7 × 3.5 + 4.2 × 4.5 = 22.5 × 3.5 - ?
1123 + 1452 + 1015 - 2640 = ?
What will come in the place of question mark (?) in the given expression?
(11/45) of 225 + 3 X 75 = ? X (72 ÷ 6 + 4)
What will come in place of (?) in the given expression.
12.5 + 7.75 - 3.6 = ?3(2/3) of 2(5/11) of 5(2/5) of 75 = ?
(12% of 1250 + 85% of 400) x 10 = ?2
22 + 60 × 3 ÷ 12 = ?
