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WAEC WASSCE Mathematics 2017 past questions and answers

This 2017 WAEC WASSCE Mathematics set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2017 set with instant marking.

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Sample WAEC WASSCE Mathematics 2017 questions

1. Express 101101_2 as a base-ten number.
  1. 43
  2. 45
  3. 41
  4. 53

Answer: B. 45

101101_2 = 1(32) + 0(16) + 1(8) + 1(4) + 0(2) + 1 = 45.

2. Simplify (2^3 x 2^5) / 2^4.
  1. 8
  2. 12
  3. 16
  4. 32

Answer: C. 16

Using laws of indices, the expression is 2^(3+5-4) = 2^4 = 16.

3. Evaluate log_10(0.001).
  1. -3
  2. -2
  3. 2
  4. 3

Answer: A. -3

Since 0.001 = 10^-3, its common logarithm is -3.

4. In a class of 36 pupils, 20 study French, 18 study Hausa and 7 study both; how many study neither language?
  1. 3
  2. 4
  3. 6
  4. 5

Answer: D. 5

The number studying at least one is 20 + 18 - 7 = 31, so 36 - 31 = 5 study neither.

5. Simplify sqrt(72) - sqrt(8).
  1. 2sqrt(2)
  2. 4sqrt(2)
  3. 6sqrt(2)
  4. 8sqrt(2)

Answer: B. 4sqrt(2)

sqrt(72) = 6sqrt(2) and sqrt(8) = 2sqrt(2), so their difference is 4sqrt(2).

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