A local post office is to send M telegrams which are distributed at random over N communication channels, `(N > M).` Each telegram is sent over any channel with equal probability. Chance that not more than one telegram will be sent over each channel is:

Ten telegrams are distributed at randam over 15 communication channels. Find the probability that the telegrams will be sent through ten different channels.

1. An examination consists of 8 questions in each of which one of the 5 alternatives is the correctde cItat a candidate who has done no preparatory work chooses for each question any one of theusfive alternatives with equal probability, the probability that he gets more than one correct answer is equal to(A) (0.8)8(B) 3 (0.8)8(C) 1-(0.8)(D) 1 3 0.8)8lo BC FYCry meyement of the ant consists of moving to one

is the set up used in the transimiision of information from one place to another. The present day communication systems are electrical, electronic or optical in nature. Three parts of a communication system are: Transmitter: Communication Channer and Receiver. A signal is defined as a single valued function of time. This function has a unique value at every instant of time. Most of the speech or information signals cannot be transmitted directly over long distances. They have to be modulated suitably and then trasmitted. Communication channer carries the modulated wave from transmitter to receiver. The air, transmission lines and free space are the common communication channels. the reciever consisits of a pickup antenna, a with the help of the above passage, choose the most appropriate alternative to each of the following questions: Communication systems may be

is the set up used in the transimiision of information from one place to another. The present day communication systems are electrical, electronic or optical in nature. Three parts of a communication system are: Transmitter: Communication Channer and Receiver. A signal is defined as a single valued function of time. This function has a unique value at every instant of time. Most of the speech or information signals cannot be transmitted directly over long distances. They have to be modulated suitably and then trasmitted. Communication channer carries the modulated wave from transmitter to receiver. The air, transmission lines and free space are the common communication channels. the reciever consisits of a pickup antenna, a with the help of the above passage, choose the most appropriate alternative to each of the following questions: A signal is a piece of information, which at a particular time has

is the set up used in the transimiision of information from one place to another. The present day communication systems are electrical, electronic or optical in nature. Three parts of a communication system are: Transmitter: Communication Channer and Receiver. A signal is defined as a single valued function of time. This function has a unique value at every instant of time. Most of the speech or information signals cannot be transmitted directly over long distances. They have to be modulated suitably and then trasmitted. Communication channer carries the modulated wave from transmitter to receiver. The air, transmission lines and free space are the common communication channels. the reciever consisits of a pickup antenna, a with the help of the above passage, choose the most appropriate alternative to each of the following questions: Out of a pick up antenna, a demodulater, an amplifier and a transducer, the receiver must have

Two equal masses of mass M each are attached to a string passing over a smooth pulley which is attached by a chain to the celiling. The tension in the chain is:

Nine numbers 1,2,3,.....9 are arranged in a rectangular array of matrix of order 3, So that each number occurs exactly once. Then probability that the sum of the numbers in atleast one horizontal row is greater than 21, is m:n, then (m+n) is

At a local post office, on average , 3 customers are in line when the post office closes each day. The probability P, that exactly n customers are in line when the post office closes can be modeled by the equation P = (3^(n)e^(-3))/(n!) . Given that e^(-3) = 0.05 . Which of the following values is closest to the probability that exactly 2 customers are in line when the post office closes?

Column I, Column II If the probability of getting at least one head is at least 0.8 in n trials, then value of n can be, p. 2 One mapping is selected at random from all mappings of the set s={1,2,3, ... ,n} into itself. If the probability that the mapping being one-one is 3/32, then the value of n is, q. 3 If m is selected at random from set {1,2,..., 10} and the probability that the quadratic equation 2x^2+2m x+m+1=0 has real roots is k , then value of 5k is more than, r. 4 A man firing at a distant target as 20% chance of hitting the target in one shoot. If P be the probabililty of hitting the target in "n" attempts , where 20 P^2-13 P+2lt=0, then the ratio of maximum and minimum value of n is less than, s. 5