Answer:
56 times
Step-by-step explanation:
P(red & red) = 0.5×0.6 = 0.3
Expected no. = no. Of trials × p
No. of trials: 84/0.3 = 280
P(blue & blue) = 0.5×0.4 = 0.2
Expected no. = 280 × 0.2
= 56
P-Q should be -11a^2+4b^2+ab
so first you do the work than check
1. ≤ 50
2. ≥ 200
25.5
because you have to do 25×1.50 -12
