waec-mathematics-2020

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50 questions

If 101 base two + 12 base y = 23 base five, find the value o...
If 101two + 12y = 23five, find the value of y A. 8 B. 7 C. 6 D. 5

An amount of ₦550,000 was realised when a principal. x was...
An amount of ₦550,000 was realised when a principal. x was saved at 2% simple interest for 5 years. Find the value of x. A. ₦470,000.00 B...

If x = 3 and y = -1, evaluate 2(x^2 - y^3)
if x = 3 and y = -1, evaluate 2(x2 - y3) A. 24 B. 22 C. 20 D. 16

Solve 3x - 2y = 10 and x + 3y = 7 simultaneously
Solve 3x - 2y = 10 and x + 3y = 7 simultaneously A. x = -4 and y = 1 B. x = -1 and y = -4 C. x = 1 and y = 4 D. x = 4 and y =...

The first term of a Geometric progression (G.P) is 3 and the...
The first term of a Geometric progression (G.P) is 3 and the 5th term is 48. Find the common ratio. A. 2 B. 4 C. 8 D. 16

Solve: 1/3 (5 - 3x) < 2/5 (3 - 7x)
Solve: 1/3 (5 - 3x) < 2/5 (3 - 7x) A. x > 7/22 B. x < 7/22 C. x > -7/27 D. x < -7/27

Make m the subject of the relation k = √(m-y / m + 1)
make m the subject of the relation k = √(m-y / m + 1) A. m = y+k2 / k2+1 B. m = y+k2 ...

Find the quadratic equation whose roots are 1/2 and -1/3
Find the quadratic equation whose roots are 1/2 and -1/3 A. 3x2 + x + 1 = 0 B. 6x2 + x - 1 = 0 C. 3x2...