In a class of 46 students, 22 play football and 26 play v...
In a class of 46 students, 22 play football and 26 play volleyball. If 3 students play both games, how many play neither?
1
2
3
4
Correct answer is A
n(f ∩ v) + n(f) + n(v) + n(f ∩ v) = 46
3 + 19 + 23 + x = 46
22 + 23 + x = 46
45 + x = 46
x = 46 - 45
x = 1
Correct 0.002473 to 3 significant figure ...
sinθ = 1/2 and cosθ = -√3/2, what is the value of θ? ...
If tan θ = 5/4, find sin2θ - cos2θ. ...
\(\begin{array}{c|c} \text{Average hourly earnings(N)} & 5 - 9 & 10 - 14 & 15 - 19 &...
P varies inversely as the square of W. When W = 4, P = 9. Find the value of P when W = 9...
Solve the equation: 15x+1x= 3...