The letters of the word PRABABILITY are written down at random in a row. Let `E_1` denotes the event that two Is are together and `E_2` denotes the event that `B ' s` are together, then `P(E_1)=P(E_2=3/(11)` (b) `P(E_1nnE_2)=2/(55)` `P(E_1uuE_2)=(18)/(55)` (d) `P((E_1)/(E_2))=1/5`

If E_(1) denots the envent sof coming sum 6 in throwing two dice and E_(2) be the event of coming 2 in any one of two, then P(E_(2)//E_(1)) is

if E_(1) and E_(2) are two events such that P(E_(1))=(1)/(4),P((E_(2))/(E_(1)))=(1)/(2) and P=((E_(1))/(E_(2)))=(1)/(4)

If E_(1) and E_(2) are events of a sample space such that P(E_(1))=(1)/(4),P((E_(2))/(E_(1)))=(1)/(2),P((E_(1))/(E_(2)))=(1)/(4) Then P((E_(1))/(E_(2)))=

Suppose E_1 and E_2 are two events of a sample space such that P(E_1)=1/2, P(E_2|E_1)=1/2, P(E_1|E_2)=1/4 then P(E'_2) = _____

Suppose E_(1) and E_(2) are two events of a random experiment such that P(E_(1))=(1)/(4), P((E_(2))/(E_(1)))=(1)/(2) and P((E_(1))/(E_(2)))=(1)/(4) then P(E_(2))=

If E_(1) and E_(2) be two events such that P(E_(1))=0.3, P(E_(2))=0.2 and P(E_(1)nnE_(2))=0.1, then find: (i) P(barE_(1)nnE_(2)) (ii) P(E_(1)nnbarE_(2))

If P(E) denotes the probability of an event E, then E is called certain event if :

If P (E) denotes the probability of an event E, then:

An urn contains four balls bearing numbers 1, 2, 3 and 123 respectively. A ball is drawn at random from the urn. Let E_i , i = 1, 2, 3 donote the event that digit i appears on the ball drawn. Statement -1: P(E_1 nn E_2) =P(E_1 nn E_3) = P (E_2 nn E_3)=1/4 Statement-2: P(E_1)=P(E_2)=P(E_3)=1/2