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Mathematics WAEC / WASSCE 2021 Statistics (Data Representation, Central Tendency & Dispersion)
find the first quartile of 7,8,7,9,11,8,7,9,6 and 8.
A
8.5
B
7.0
C
7.5
D
8.0
medium Difficulty
Mathematics WAEC / WASSCE 2021 Statistics (Data Representation, Central Tendency & Dispersion)
Height(cm) 160 161 162 163 164 165 No. of players 4 6 3 7 8 9 the table shows the height of 37 players of a basketball team calculates correct to one decimal place the mean height of the players.
A
163.0
B
162.0
C
160.0
D
165.0
medium Difficulty
Mathematics WAEC / WASSCE 2021 Statistics (Data Representation, Central Tendency & Dispersion)
The pie chart represents the distribution of fruits on display in the shop if there are 60 apples on display how many oranges are there?
Attached Figure / Diagram
Question diagram
A
80
B
270
C
120
D
90
medium Difficulty
Mathematics UTME / JAMB 2021 Statistics (Data Representation, Central Tendency & Dispersion)
4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16
A
48o
B
84o
C
92o
D
276o
medium Difficulty
Mathematics UTME / JAMB 2021 Permutations, Combinations & Probability
Find the probability that a number selected at random from 41 to 56 is a multiple of 9
A
\(\frac{1}{8}\)
B
\(\frac{2}{15}\)
C
\(\frac{3}{16}\)
D
\(\frac{7}{8}\)
medium Difficulty
Mathematics WAEC / WASSCE 2021 Permutations, Combinations & Probability
A fair die is tossed twice what is the probability of get a sum of at least 10.
A
\(\frac{5}{36}\)
B
\(\frac{2}{3}\)
C
\(\frac{5}{18}\)
D
\(\frac{1}{6}\)
medium Difficulty
Physics UTME / JAMB 2021 Calorimetry, Latent Heat & Change of State
Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat capacity of copper = 400Jkg\(^{1}\)k\(^{-1}\), latent heat of fusion of ice = 3.3 x 10\(^{5}\)Jkg\(^{-1}\))
A
\(\frac{8}{33}\)kg
B
\(\frac{3.3}{80}\)kg
C
\(\frac{80}{33}\)kg
D
\(\frac{3.3}{8}\)kg
medium Difficulty
Physics WAEC / WASSCE 2021 Calorimetry, Latent Heat & Change of State
A metallic sphere is heated from 27°C to 200°C Without change of state. Which of the following changes would have resulted from the heating?
A
No changes occur in its volume and density
B
Its volume increases and its density increases
C
Its volume increases and its density decrease
D
Its volume increases without a change in density
medium Difficulty
Physics UTME / JAMB 2021 Circular Motion, Gravitation & Simple Harmonic Motion
Particles of mass 10\(^{-2}\)kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad\(^{-1}\). If the radius of the blade is 0.2m, the centripetal force is?
A
2N
B
20N
C
200N
D
400N
medium Difficulty
Physics WAEC / WASSCE 2021 Circular Motion, Gravitation & Simple Harmonic Motion
A ball is swung in a horizontal circle of centre O with a constant speed. What is the direction of its acceleration?
A
Away from O
B
Along the Circumference of the circle
C
Toward centre O
D
Along a tangent to the circle
medium Difficulty
Physics UTME / JAMB 2021 Work, Energy, Power & Simple Machines
A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms\(^{-1}\) from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is? (Take g = 10ms\(^{-2}\))
A
5J
B
10J
C
15J
D
20J
medium Difficulty
Physics WAEC / WASSCE 2021 Work, Energy, Power & Simple Machines
A man weighing 200 N runs up a staircase in 5s. If the height of the staircase is 9 m, calculate the power of the man.
A
1000 W
B
360 W
C
40 W
D
1800 W
medium Difficulty
Physics UTME / JAMB 2021 Linear Motion, Projectiles & Kinematics
The slope of the straight line displacement-time graph indicates?
A
distance traveled
B
uniform velocity
C
uniform acceleration
D
uniform speed
medium Difficulty
Physics UTME / JAMB 2021 Linear Motion, Projectiles & Kinematics
Two bodies have masses in the ratio3:1. They experience forces which impart to them, acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced
A
1:4
B
2:1
C
2:3
D
2:5
medium Difficulty
Physics WAEC / WASSCE 2021 Linear Motion, Projectiles & Kinematics
The diagram above illustrates the velocity-time graph of a body. Calculate the distance covered by the body during the motion
Attached Figure / Diagram
Question diagram
A
15m
B
84m
C
72m
D
48m
medium Difficulty
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