(1) Evaluate : (i) 125 (ii)
☼ Antilogarithm : If log x = y, then x = Antilog ( y ).
How to Insert Decimal Point ?
▪ Case I : When Characteristic of lo…
☼ Properties of Logarithms :
…
(9) A committee of 4 has to be formed out of 7 boys and 3 girls. Find the probability that it includes at least 1 girl.
Soln. Here, n =
(5) A bag contains 6 red and 4 white balls. Three balls are drawn at random. Find the probability that they are of the same colour.
Soln. Let, A : Event of getting two balls of same colour.
P ( A ) =
(1) In a throw of a coin, find the probability of getting a tail.
Soln. Here, S = { H, T } ( i.e. n = 2 ) and A = { H } ( i.e. m = 1 ).
☼ Probability : In a random experiment, let S be the sample space and E be the event. Then, E S. Then, we define (if m = n…
☼ Give the difference between mutually exclusive events and independent events.
☼ Event : The result of an experiment are known as events:
e.g. (i) If a coin is tossed head ( H ) and tail ( T ) are two different events.
(ii) 1, 2, 3, 4, 5, 6 are different even…