Question
In a container, there are (x + 4) red balls, ‘x’
blue balls, and (x + 5) black balls. If the probability of picking two blue balls at random is (1/30), then find the value of ‘x’.Solution
According to the question, Total number of balls in the container = (x + 4 + x + x + 5) = (3x + 9) According to the question, 
Since the number of balls cannot be negative, Therefore, x = 6
More Probability Questions
√10201 × √3969 - (52)² = √? + (60)²
...20% of 550 × 25% of 80 = ?2 × 22
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
1024 ÷ 32 = 2(1/2)×?
What will come in the place of question mark (?) in the given expression?
(28/14) of 56 + ? = 920 ÷ 5
?% of 320 - 69 = 123
√? = 32% of 900 + 48% of 50
?2 × 25 = 42 × 21 + 172
18 * 9 + 25% of 120 + 50% of 200 = ?
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