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Wednesday, 22 April 2026
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Mathematics Past Questions and Answers

Jamb 2015 Mathematics Questions

Question 121:
Calculate the value of x and y if (27x ÷ 81x+2y = 9 ,x + 4y = 0
  • A X = 1, y = 1/2
  • B X = 2, y = — 1/2
  • C X − 0, y = 1
  • D X = 2, y = —1
View Answer & Explanation
Question 122:
Simplify √30 x √40
  • A 10 √3
  • B 5 √3
  • C 20 √3
  • D 15 √3
View Answer & Explanation
Question 123:
If √ (2x + 2) − √x =1 ,find x.
  • A X = 1 twice
  • B X = 0 or 1
  • C X = 3 or 1
  • D X = 2 twice
View Answer & Explanation
Question 124:
The sum of two numbers is 5; their product is 14. Find the numbers.
  • A X = 5 or 1
  • B X = 7 or 1
  • C X = 7 or 0
  • D X = 7 or − 2
View Answer & Explanation
Question 125:
Solve the equation
\( 5^{(x − 2)} = (1 ÷ 125)^{(x +3)}\)
  • A 3/2
  • B − 7/4
  • C 4/7
  • D 7/4
View Answer & Explanation