Jamb Mathematics Past Questions and Answers

Question 366:

• JAMB 2015

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

Question 367:

• JAMB 2015

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

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

Question 368:

• JAMB 2015

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

Question 369:

• JAMB 2015

Simplify √30 x √40

A. 10 √3
B. 5 √3
C. 20 √3
D. 15 √3

Question 370:

• JAMB 2015

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