Answer:
0.0009765625
Step-by-step explanation:
Each multiple choice question has 4 equally likely alternatives.
Hence, probability of guessing the right answer for 1 question is ![\[\frac{1}{4}\]](https://tex.z-dn.net/?f=%5C%5B%5Cfrac%7B1%7D%7B4%7D%5C%5D)
= 0.25
Hence, probability of guessing the wrong answer is = 0.75
The probability of guessing 5 or more questions correctly = probability of guessing 5 questions correctly & 1 question wrong + probability of guessing 6 questions correctly
= ![\[0.25^{5}*0.75+0.25^{6}\] ](https://tex.z-dn.net/?f=%5C%5B0.25%5E%7B5%7D%2A0.75%2B0.25%5E%7B6%7D%5C%5D%0A)
= 0.000732421875 + 0.000244140625
= 0.0009765625
Answer:
28
Step-by-step explanation:
-7x2 is -14
-14x-2 is positive 28.
Answer:
96
Step-by-step explanation:
O is double D. And A is equal to O. Hence 2*48=96
Answer:
12750
Step-by-step explanation:
The sequence of visitors is
50, 100, 200, 400, .....
This is a geometric sequence
with common ratio r = 2
The sum to n terms is found using
= 
( a is the first term )
= 
= 50 × 255 = 12750
Answer: The perimeter is 10.1415925, which you can round down to 10, or leave it as is.
