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Mathematics Mock Test - 9

Medium 50 Questions 49 min 50 marks 1 attempts

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49 min · 50 marks · Full test mode with leaderboard

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Question No: 31Difficulty: mediumMarks: 1mcqAnswered correctly: 0%

The number of solutions of the following equations x_{2} - x_{3} = 1, - x_{1} + 2 x_{3} = - 2, x_{1} - 2 x_{2} = 3 is:

Question No: 32Difficulty: mediumMarks: 1mcqAnswered correctly: 0%

If x is a positive integer, then Δ = x! (x + 1)! (x + 2)! (x + 1)! (x + 2)! (x + 3)! (x + 2)! (x + 3)! (x + 4)! is equal to:

Question No: 33Difficulty: mediumMarks: 1mcqAnswered correctly: 0%

If a = \frac{2 s i n θ}{1 + c o s θ + s i n θ} then \frac{1 + s i n θ - c o s θ}{1 + s i n θ} is:

Question No: 34Difficulty: mediumMarks: 1mcqAnswered correctly: 0%

In a triangle A BC, ∣ BC ∣ = 8, ∣ C A ∣ = 7, ∣ A B ∣ = 10, then the projection of the A B on A C is equal to:

Question No: 35Difficulty: mediumMarks: 1mcqAnswered correctly: 0%

If X and Y are random variables such that E (X) = 10, V (X) = 25 and E (Y) = 0, V (Y) = 1, the values of a, b such that Y = a X - b will be:

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