Which Door Will You Open First ? #shorts | Paheli | Paheliya | Zestful Paheli |

Give short answers : During HIV infection, it is the other diseases which kill the patient rather than the HIV infection. Can you justify this statement?

Which bank became the first bank to open its branch in China ?

One of the ten available keys opens the door. If we try the keys one after another, then find the following (i) the probability that the door is opened in the first attemt. (ii) the probability tht the door is opened in the second attempt. (iii) the probability that the door is opened in the third attempt. (iv) the probability that the door is opened in the tenth attempt.

One of 10 keys open the door. If we try the keys one after another, then find the following: (i) The probability that the door is opened on the first attempt. (ii) The probability that the door is opened on the second attempt. (iii) The probability that the door is opened on the 10th attempt.