Question 1The perimeter of a sector of a circle of radius 21cm is 64cm. Find the angle of the sector.[Take π = 22/7]A.70°B.60°C.55°D.42°Objective Show full explanation
Question 2If the sum of the roots of the equation(x - p)(2x + 1) = 0 is 1, find the value of p.A.1 1/2B.1/2C.-1/2D.-1 1/2Objective Show full explanation
Question 3If x = $${\frac23}$$ and y = -6, evaluate xy - $${\frac yx}$$.A.0B.5C.8D.9Objective Show full explanation
Question 4Factorise: x + y - ax - ay.A.(x - y)(1 - a)B.(x + y)(1 + a)C.(x + y)(1 - a)D.(x - y)(1 + a)Objective Show full explanation
Question 5Given that $${\frac{5^{n + 3}}{25^{2n - 3}} = 5^0}$$, find n.A.n = 1B.n = 2C.n = 3D.n =5Objective Show full explanation
Question 6Find the equation of a line perpendicular to line 2y = 5x + 4 which passes through (4, 2).A.5y - 2x - 18 = 0B.5y + 2x - 18 = 0C.5y - 2x + 18 = 0D.5y + 2x - 2 = 0Objective Show full explanation
Question 7In a class of 46 students, 22 play football and 26 play volleyball. If 3 students play both games, how many play neither?A.1B.2C.3D.4Objective Show full explanation
Question 8Find the remainder when 2x³ - 11x² + 8x - 1 is divided by x + 3.A.-871B.-781C.-187D.-178Objective Show full explanation
Question 9Convert 2710 to another numbe in base three.A.10013B.10103C.11003D.10003Objective Show full explanation
Question 10If the interest on N150.00 for $${2\frac{1}2}$$ years is N4.50, find the interest on N250.00 for 6 months at the same rate.A.N1.50B.N7.50C.N15.00D.N18.00Objective Show full explanation