a×b=(1,2,3)×(3,−2,1)=(2⋅1−3⋅(−2),3⋅3−1⋅1,1⋅(−2)−2⋅3)=(8,8,−8). Magnitude =64+64+64=83.
If the mean of a binomial distribution is 12 and its standard deviation is 2, then the number of trials is :
Held on 23 May 2023 · Verified 13 Jul 2026.
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If the total cost and total revenue of a company that produces and sells $x$ units of a particular product are $C(x) = 5x + 350$ and $R(x) = 50x - x^2$ respectively, then which of the following is/are the breakeven values: (A) $x = 10$ (B) $x = 25$ (C) $x = 45$ (D) $x = 30$ Choose the correct answer from the options given below:
The supply function of a commodity is P = $x^3+2x+18$. When 4 units of commodity are sold , then producer surplus is:
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If the random variable X follows the Poisson distribution such that P[X = k] = P[X = k+1], then the mean value of X is:
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