Question
Seven teachers A, B, C, D, E, Y and Z are sitting in a
straight row, facing north. Only A sits between E and D. Only B sits between Z and Y. Only C sits to the right of E. A is to the immediate left of E. Z does not sit at any extreme ends of the row. Who sits to the immediate left of B?Solution
The correct answer is A
Solve for x in the interval [0, 2π]: 2 sin²x + 3 sinx - 2 = 0.
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