Mathematics Past Questions

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3041

The probability of an outcome A is 1/6 . The probability of the B outcome is 1/4 . If the probability of A or B or both is 1/12 . What is the probability of both outcomes A and B?

A. 1/2
B. 1/3
C. 2/5
D. 3/4

View Answer & Discuss (4) JAMB 2015

3042

Given that Z = {1,2,4,5} what is the power of set Z?

A. 16
B. 8
C. 10
D. 12

View Answer & Discuss (1) JAMB 2015

3043

Calculate the value of x and y if (27^x ÷ 81^x+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 & Discuss JAMB 2015

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3044

Simplify \(\sqrt{30}\) × \(\sqrt{40}\)

A. 10 √3
B. 5 √3
C. 20 √3
D. 15 √3

View Answer & Discuss (3) JAMB 2015

3045

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 & Discuss (1) JAMB 2015

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