GK Expert Team Solutions for Exercise 1: OBJECTIVE TYPE QUESTIONS

The probability that a marksman will hit a target is given as 1/5. Then the probability of atleast one hit in 10 shots is

The letters of the word 'PROBABILITY' are arranged in all possible ways. The chance that two B's and also two I's together is 

Three letters are written to different persons and addresses on the envelopes are also written. Without looking at the addresses, the letters are put into envelopes, the probability that letters go into the right envelopes is:

Two numbers x and y are chosen at random from the set of the first 30 natural numbers. The chance that x and y is divisible by 3 is 

If three dice are thrown. Find the probability that they show numbers in A.P.

Probability of getting a number from $1$ to $100$ which is divisible by $1$ and itself only is?

A natural number $x$ is chosen at random from the first $100$ natural numbers. The probability that $x+4x>50$, is:

If $A$ and $B$ are two events such that $P\left(A\cup B\right)=\frac{5}{6}, P\left(A\cap B\right)=\frac{1}{3}, P\left(B\right)=\frac{1}{2}$ the events $A$ and $B$ are: