chetan2u wrote:
Bunuel wrote:
One number, n, is selected at random from a set of 10 integers. What is the probability that 1/2*n + 13 = 0 ?
(1) The largest integer in the set is 13.
(2) The arithmetic mean of the set is zero.
(1) The largest integer in the set is 13.
(2) The arithmetic mean of the set is zero.
The Q can be rephrased-
\(\frac{1}{2}* n + 13 =0............n=-13*2=-26\) ...............
so there are 10 integers and we have to find that what is the probability of the integer,n, being picked to be -26....
HAD the Q said been - a set of 10 DIFFERENT integers, our answer would be 1/10, but we do not know
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