Explanation

Total balls = 1 + 2 + 3 = 6

Red balls = 3

Probability = 3/6 = 1/2

Verified & Updated

Explanation

Total balls = 6 red + 4 blue + 5 green = 15  

Number of blue balls = 4  

Probability of selecting a blue ball = Number of blue balls / Total balls  

= 4 / 15

Verified & Updated

Explanation

• The formula for probability is: Favorable Outcomes ÷ Total Outcomes.
• Probability measures the chance of an event occurring.
• Its value always lies between 0 and 1.
• 0 means the event is impossible, while 1 means it is certain.
• It is widely used in mathematics, statistics, and everyday decision-making.

Last verified on 12-07-2026

Explanation

Total number of machines = 140  

Number of defective machines = 30  

Probability = Number of defective machines / Total number of machines  

Probability = 30 / 140  

Probability = 3 / 14  

Last verified on 11-07-2026

Explanation

Total balls = 4 blue + 3 red = 7  

Number of red balls = 3  

Probability = Favorable outcomes / Total outcomes  

= Number of red balls / Total balls  

= 3 / 7

Last verified on 11-07-2026