Statistics for Two Truths and a Lie - Mathematics

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Question	Answer	% Correct
Which statement is false?	The following identity is always true: sin(A + B) = sin A + sin B	89%
Which statement is false?	(a + b)² = a² + b²	79%
Which statement is false?	If f'(x) = 0 for some value of x, then (x,f(x)) must be the maximum point of the curve	71%
Which statement is false?	The sum of a geometric series is given by the formula: S = a / (1 − r)	71%
Which statement is false?	The following sequence is arithmetic: 1, 3, 6, 10, ...	68%
Which statement is false?	The power of a power rule is: (a^m)ⁿ = a^{m + n}	68%
Which statement is false?	The quadratic equation x² − 2x − 3 = 0 has only one solution	68%
Which statement is false?	When converting degrees to radians, you divide by (360/π)	64%
Which statement is false?	All angles in a quadrilateral must be smaller than 180°	54%
Which statement is false?	For all values of x, tan x = sin x / cos x	11%