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.
If Champak is the father of Bholu, who is the father of Jelly. Radha is Grandmother of Oggy, who is the son of Jaadu. Mitthu is the paternal uncle of Og...
Answer the questions based on the information given below.
Eight persons D, E, F, G, H, I, J, and K belong to a family of three generations. ...
Read the directions carefully and answer the following questions.
If,
‘X * Y’ means X is father of Y,
‘X # Y’ means X is ...
U is the daughter in law of whom among the following
How is U related to W?
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and the...
How is H related to J?
If 'O' is 'M's daughter; 'N' is 'O's brother; 'K is 'N's father and 'F' is 'K's mother, then how is F related to 'M'?
How is N related to P?
D is the brother of C. E is the sister of F, who is the son of B. G is the daughter-in-law of C. F is married to G. C is not a male. How is D related to B?
