NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 391:

• JAMB 1998

If 1011₂ + x₇ = 25₁₀, solve for X.

A. 20₇
B. 14
C. 20
D. 24

Question 392:

• JAMB 1998

Evaluate [\(\frac{1}{0.03}\) \(\div\) \(\frac{1}{0.024}\)]^-1 correct to 2 decimal places

A. 3.76
B. 1.25
C. 0.94
D. 0.75

Question 393:

• JAMB 1998

A market woman sells oil in cylindrical tins 10cm deep and 6cm in diameter at N15.00 each. If she bought a full cylindrical jug 18cm deep and 10cm in diameter for N50.00, how much did she make by selling all the oil?

A. N62.50
B. N35.00
C. N31.00
D. N25.00

Question 394:

• JAMB 1998

A man is paid r naira per hour for normal work and double rate for overtime. if he does a 35-hour week which includes q hours of overtime, what is his weekly earning in naira?

A. R(35 + q)
B. Q(35r - q)
C. Q(35 + r)
D. R(35 + 2q)

Question 395:

• JAMB 1998

In the venn diagram, the shaded region is

A. (P \(\cap\) Q) \(\cup\) R
B. (P \(\cap\) Q) \(\cap\) R
C. (P \(\cap\) Q¹) \(\cap\) R
D. (P \(\cap\) Q¹) \(\cup\) R