In a class of 40 students, 32 offer mathematics, 24 offer...
In a class of 40 students, 32 offer mathematics, 24 offer physics and 4 offer neither mathematics nor physics. How many offer both mathematics and physics?
4
8
16
20
Correct answer is D
40 = 32 - x + x + 24 + 4
40 = 60 - x
x = 60 - 40
x = 20
If p = 12 and 1p−1=2p+x, find the value of x...
Make t the subject of k = m√t−pr...
The histogram shows the age distribution of members of a club. How many members are in the club? ...
If M = {x : 3 ≤ x < 8} and N = {x : 8 < x ≤ 12}, which of the follow...
Age in years 7 8 9 10 11 No of pupils 4 13 30 44 9 The table above shows...
A car travels at an average speed of 75km/h. Find its speed in metres per second. ...