c⋅d=5∣a∣2+6a⋅b−8∣b∣2=0.
5+6a⋅b−8=0⇒a⋅b=21.
So cosθ=21⇒θ=3π.
Match List - I with List - II.
| List - I | List - II |
|---|---|
| (A) A special characteristic of a population is called | (I) Sample Size |
| (B) The number of statistical individuals in a sample is called | (II) Statistic |
| (C) A special characteristic of a sample is called | (III) Standard error |
| (D) The standard deviation of the sampling distribution of a statistic is known as its | (IV) Parameter |
Choose the correct answer from the options given below :
Held on 15 Jun 2023 · Verified 13 Jul 2026.
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
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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:
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