Answer:
9
The middle numbers are 8 and 10. 9 is the number in between them which means it is the median.
Answer:
-5,-11
8,14
Step-by-step explanation:
Let 's say r the commun difference
1)
1,1+r,1+2r,1+3r=-17
1+3r=-17
3r=-18
r=-6
Sequence is 1,-5,-11,-17
2)
2,2+r,2+2r,2+3r=20
2+3r=20
3r=18
r=6
Sequence is 2,8,14,20
Answer:
1884
Step-by-step explanation:
1)If you hear the condition "less than four letters" it means that each word can consist of 3,2 or 1 letter. Firstly, consider the easiest situation with the word from one letter. There are 12 letters, so there are 12 words from one letter.
Then the words from two letters. The first letter of such a word can be chosen in 12 means(because 12 letters are available), then the second letter can be chosen in 12 means too. 12*12=144 words with 2 letters. (Multiplying, not adding, because each two words form one combination).
Then for the words from three letters, use the same rule, 12 means for the first letter, 12 means for the second letter, 12 means for the third letter. 12*12*12=1728 words.
Having particular words from 1,2,3 letters add them to get total quantity of words: 12+144+1728=1884words,that is the answer.
50cm = 0.5 meters ,so he will need 32 sections
