4. 24 = 23 x 3 36 = 22 x 32 64 = 26 hcf = 22 = 4
24 = 23 x 3 64 = 26 88 = 23 x 11 factors in common: 23... 1, 2, 4 & 8
26 The reason is, -25 and 25 cancel each other out. -24 and 24, -23 and 23, etc. cancel each other out. In the end, you are left with 26.
xy=24 and y=23-x so x(23-x)=24, which is x2-23x+24 = 0, and you solve this using the formula method to get approximately 21.95 and 1.05 If the product had been 23 and the sum 24 the equation would have factorized easily and you would have 1 and 23
24 and 2 2 X 24=48 2+24=26
8 = 23, 24 = 23 x 3; product = 3 x 26
4. 24 = 23 x 3 36 = 22 x 32 64 = 26 hcf = 22 = 4
2412 x 26 x 2 x 23 x 2 x 2 x 2
The even numbers between 23 and 27 are 24 and 26, and their product is 24*26 = 624
23 x 24 is 552
24. 600 = 23 x 3 x 52 216 = 23 x 33 gcf = 23 x 3 = 24
This is easiest to answer by working out the probability of not getting such a license plate and subtracting that from 1. There are 10 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 10 different possible license plates (since there are 10 digits: 0-9 and 26 letters: A-Z). To not have any repeated digits or letters, there are: 10 x 26 x 25 x 24 x 23 x 22 x 21 x 20 x 9 possible license plates (since the two digits must be different and the seven letters must all be different). Meaning the probability of getting one of these is: (10 x 26 x 25 x 24 x 23 x 22 x 21 x 20 x 9)/(10 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 10) = (25 x 3 x 23 x 11 x 21 x 9)/(26 x 13 x 13 x 13 x 13 x 13) = 3586275/9653618 ⇒ probability of getting at least one repeating digit or number is: 1 - 3586275/9653618 = 6067343/9653618≈ 0.629
Mean: 25 Median: 25 Mode: 24, 26 Range: 4
(Factorial 24) / (Factorial 3 x Factorial 21) = (24 x 23 x 22) / (3 x 2 x 1) = (24 x 23 x 22) / (6) = 4 x 23 x 22 = 2024
24 = 23 x 3 64 = 26 88 = 23 x 11 factors in common: 23... 1, 2, 4 & 8
26
The median is the middle value.18 , 23 , 24 , 26 , 26 , 27Since there are two middle numbers, the median is the arithmetic mean of the two middle numbers.24 + 26 = 5050/2 = 25Median is 25