Answer:
0.249874
Step-by-step explanation:
After every 4 digits, n squared is divisible by 8 so we have 1989/4= 497 numbers divisible by 4 after squaring
probability n=497/1989= 0.249874
Probability n=0.249874
B
........................
B.) x = 16
D -24/25
sin(2x) = 2sin(x)cos(x)
cos(x) = ⅘
sin²(x) = 1 - cos²(x) = 1 - (⅘)²
sin²(x) = 9/25
sin(x) = -⅗
(Because 4th quadrant)
sin(2x) = 2(-⅗)(⅘)
= -24/25
g = 62/3 or
