Multiple choice

In a box, there are 10 black, 13 white and 12 red balls. One ball is picked up randomly. What is the probability that it is neither white nor red? एक बॉक्स में, वहाँ 10 काली, 13 सफेद और 12 लाल गेंदे हैं। एक गेंद बेतरतीब ढंग से उठाई जाती है। क्या संभावना है कि यह न तो सफेद और न ही लाल हो?

  1. 2/7

  2. 5/7

  3. 1/7

  4. 3/7

  5. 4/7
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The question asks for the probability that a randomly picked ball is neither white nor red, which means it must be black. There are 10 black balls out of a total of 10 + 13 + 12 = 35 balls. Therefore, the probability of picking a black ball is 10/35 = 2/7. This is a straightforward probability calculation.

Keep practicing — related questions