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How many times should the dice be thrown, so that with the probability 1/2 the amount of dropped points will exceed 100?
The diameter of the circle is measured approximately. Assuming that its value is uniformly distributed on the interval [a, b], find the distribution of the circle square.
While distributing the deck of 52 cards to four players one of them did not get aces three times in a row. Does he have a reason to complain about bad luck?
Observations have shown that in some areas in September there are 12 rainy days in average. What is the probability that out of eight randomly taken days in this month three days will be rainy?
What is more likely: when throwing four dice receive a unit at least on one of them or with 24 tosses of two dice at least once get two units?
What's the area of a rectangle with a base of 4m and height of 9m?
A rectangle with 2 side that are 5, and another 2 sides that are 14, is this rectangle a quadrilateral or parallelogram?
The diagonals of a rectangle must be congruent. Is it true?
A right triangle can be equilateral. Is it true?
A triangle can have angles of measure 74 degrees, 43 degrees and 62 degrees. Is it true?








