Mathematics JAMB, WAEC, NECO AND NABTEB Official Past Questions

Home » Past Questions » Mathematics » Waec » Page 110
2290

What is the probability of having an odd number in a single toss of a fair die?

  • A. 1/6
  • B. 1/3
  • C. 1/2
  • D. 2/3
  • E. 5/6
View Answer & Discuss WAEC 1988
2291

A sales girl gave a change of N1.15 to a customer instead of N1.25. Calculate her percentage error

  • A. 10%
  • B. 7%
  • C. 8.0%
  • D. 2.4%
  • E. 10%
View Answer & Discuss WAEC 1988
2292

Find the quadratic equation whose roots are x = -2 or x = 7

  • A. x2 + 2x - 7 = 0
  • B. x2 - 2x + 7 = 0
  • C. x2 + 5 +14 = 0
  • D. x2 - 5x - 14 = 0
  • E. x2 + 5x - 14 = 0
View Answer & Discuss WAEC 1988
2293

Calculate the value of x in the diagram above

  • A. 18o
  • B. 30o
  • C. 40o
  • D. 60o
  • E. 15°
View Answer & Discuss WAEC 1988
2294

A student told to draw the graph of y = x2 + 4x – 6. He is then told to draw a liner graph on the same axis such that the intersection of the two graphs will give the solutions to the equation x2 + 4x – 7 = 0, What is the equation of the linear graph he needs to draw?

  • A. x = 1
  • B. x = -1
  • C. y = 1
  • D. y = -1
  • E. x + y = 1
View Answer & Discuss WAEC 1988
2295

Simplify (271/3)2

  • A. 41/2
  • B. 6
  • C. 9
  • D. 18
  • E. 81
View Answer & Discuss WAEC 1988
2296

If sinθ = 3/5 find tanθ for 0 < θ < 90o

  • A. 4\5
  • B. 3\4
  • C. 5\8
  • D. 1\2
  • E. 3\8
View Answer & Discuss WAEC 1988
2297

Points P and Q respectively 24m north and 7m east point R. What is the bearing of Q from P to the nearest whole degree?

  • A. 16o
  • B. 17o
  • C. 73o
  • D. 106o
  • E. 164o
View Answer & Discuss WAEC 1988
2298

Points P and Q respectively 24m north and 7m east point R. Calculate |PQ| in meters

  • A. 20
  • B. 24
  • C. 25
  • D. 31
  • E. 84
View Answer & Discuss WAEC 1988
2299

The number 186,470 was corrected to 186,000. Which of the following describe the degree of approximation made?
I. to the nearest hundred II. to the nearest thousand III. to 3 significant figures IV. to 4 significant figures

  • A. I & III only
  • B. I & IV only
  • C. II & III only
  • D. II & IV only
  • E. All of the above
View Answer & Discuss WAEC 1988
2300

What is the difference in longitude between P (lat. 50°N. long. 50°W) and Q (lat.50°N, long. 150°W)?

  • A. 300o
  • B. 200o
  • C. 130o
  • D. 100o
  • E. 30o
View Answer & Discuss WAEC 1988
2301

A ladder 9m long leans against a vertical wall, making an angle of 64° with the horizontal ground. calculate correct to one decimal place, how far the foot of the ladder is from the wall.

  • A. 4.0m
  • B. 5.8m
  • C. 7.1m
  • D. 8.1m
  • E. 18.5m
View Answer & Discuss WAEC 1988
2302

In the diagram above, find the ratio |PQ|/|PR|

  • A. 2 : 5
  • B. 3 : 5
  • C. 2 : 3
  • D. 3 : 2
  • E. 5 : 3
View Answer & Discuss WAEC 1988
2303

If cos 60° = 1/2, which of the following angle has cosine of -1/2?

  • A. 30o
  • B. 120o
  • C. 150o
  • D. 210o
  • E. 300o
View Answer & Discuss WAEC 1988
2304

A group of students took a test and the following frequency table shows the scores above

The median score is

  • A. o
  • B. 2.5
  • C. 3
  • D. 5
  • E. 7
View Answer & Discuss WAEC 1988
2305

A group of students took a test and the following frequency table shows the scores above

The mean score is

  • A. 1.75
  • B. 2
  • C. 2.5
  • D. 2.75
  • E. 3
View Answer & Discuss WAEC 1988
2306

A group of students took a test and the following frequency table shows the scores above
Find the mode

  • A. 2
  • B. 3
  • C. 4
  • D. 5
  • E. 7
View Answer & Discuss WAEC 1988
2307

Find the 8th term of the A.P -3, -1, 1 ……

  • A. 13
  • B. 11
  • C. -8
  • D. -11
  • E. -17
View Answer & Discuss WAEC 1988
2308

Simplify 36\(^\frac{1}{2}\) x 64\(-^\frac{1}{3}\) x 5\(^0\)

  • A. 0
  • B. 1\24
  • C. 2/3
  • D. 11/2
  • E. 71/2
View Answer & Discuss WAEC 1988
2309

Express the product of 0.06 and 0.09 in standard form

  • A. 5.4 * 10-1
  • B. 5.4*10-2
  • C. 5.4*10-3
  • D. 5.4*102
  • E. 5.4*103
View Answer & Discuss WAEC 1988
2310

Evaluate (101.5)2 – (100.5)2

  • A. 1
  • B. 2.02
  • C. 20.02
  • D. 202
  • E. 2020
View Answer & Discuss WAEC 1988