4र 24 का बीचमा n ओटा समानान्तरीय मध्यमाहरु छन् । यदि तेसो मध्यमा र अन्तिम मध्यमाको अनुपात 4:5 भए उक्त श्रेणीमा जम्मा
कतिओटा पदहरु छन् पत्ता लगाउनुहोस् । (There are n arithmetic means between 4 and 24. If the ratio of third mean, to
the last mean is 4:5 then find the number of terms in the series.)
(Ans:

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

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Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)