Question
An unbiased coin is tossed until a head appears. The
expected number of tosses required isSolution
Let X denote the number of tails tossed before the head appears. Then X is a geometric random variable. P(head) = 1 / 2 and the expectation is E(X)=1 / (1/2) = 2.
India and _______ country has signed an agreement to strengthen the critical mineral supply chain?
As of July 1, 2025, how many years has the Goods and Services Tax (GST) been in operation?
Afar Triangle, recently seen in news, is associated with which one of the following?
Scientists recently discovered a rare vampire squid, the second known living species, in the deep waters off Hainan Island. This island is associated wi...
What type of climate is typically encountered in India by locations situated north of the Tropic of Cancer?
The 8th Defense Dialogue between __________ and Thailand was held in Bangkok.
Recently which of the following inducted its first batch of Mandarin-trained officers to support the regular Army's efforts to enhance experti...
Which of the following Indian literary works was not included in UNESCO’s Memory of the World Register?
What is the theme of World Glaucoma Day 2024?
Who has been named the laureate of the 2025 Pritzker Architecture Prize?
