Ramachandra

Definition

Probability  is a measure or estimation of how likely it is that/some event(s) will happen or that a statement is true.

Max Value > 0 and≤ 1

Probability in Sholay

If a coin has same both sides, the chances of head is always=P(Head)=1

Probability in Sholay

If a coin has same both sides, the chances of A tail is always=P(Tail)=0

P(Head) or (tail)

P(Head) or P(Tail)=0.5

In a statistical experiment ∑P(P1+P2……………PN)=1

P(Head)+P(Tail)=0.5+0.5=1

Tiny Example

Red,=2,Green=3 & blue=5. If you randomly select 1 marble, probability of that it would be green is ?Answer:

10 equally likely outcomes three of which are green marblesP( green )= 3/10= 0.30.

10 marbles

P(Desired one) = ( Number of desired in urn) / ( Total number of equally likely outcomes ) = D / N

If a coin is tossed n times(≥2) then A coin is tossed three times. What is the

probability that it lands on heads exactly one time? (A) 0.125 

(B) 0.250 (C) 0.333 (D) 0.375 (E) 0.500

Solution Answer is (D) Outcomes: HHH+HHT+ HTH+THH+ HTT+ THT+

TTH+TTT=8. Of the 8 possible outcomes, 3 have exactly one

head= HTT, THT, and TTH,then probability that three flips of a coin will produce exactly one head is 3/8 = 0.375.

This tiny information is a seed......Nurture it.