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Jamb Mathematics 2015 Past Questions and Answers

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Jamb 2015 Mathematics Past 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



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