NOTASI SIGMA

8

23

7

13

3

42

32

22

52

12

20

17

19

18

21

$$\sum_{x=4}^92^x$$  

$$\sum_{a=1}^3\left(2-a\right)$$  

$$\sum_{x=1}^72^k$$  

$$\sum_{k=0}^7\left(k+3\right)$$  

$$\sum_{x=1}^7\left(2x\right)$$  

$$\sum_{k=1}^74k\left(k+8\right)$$  

$$\sum_{k=1}^7\left(4k^2+32k+49\right)$$  

$$\sum_{k=2}^84k\left(k-8\right)$$  

$$\sum_{k=2}^8\left(4k^2+32k+69\right)$$  

$$\sum_{k=2}^8\left(4k^2-32k+49\right)$$  

$$\sum_{k=1}^6\left(7k-3\right)$$  

$$\sum_{k=1}^6\left(7k-2\right)$$  

$$\sum_{k=1}^6\left(7k+1\right)$$  

$$\sum_{k=1}^6\left(7k+9\right)$$  

$$\sum_{k=1}^6\left(7k+12\right)$$  

$$\sum_{n=1}^{171}2^{n-10}$$  

$$\sum_{n=1}^{171}2^{n+11}$$  

$$\sum_{n=1}^{171}2^{n-11}$$  

$$\sum_{n=1}^{171}2^{n+12}$$  

$$\sum_{n=1}^{171}2^{n-13}$$  

$$\sum_{n=4}^{100}\frac{1}{n}$$  

$$\sum_{n=4}^{100}\frac{1}{n+3}$$  

$$\sum_{n=4}^{100}\frac{1}{n-3}$$  

$$\sum_{n=1}^{97}\frac{1}{n+10}$$  

$$\sum_{n=1}^{97}\frac{1}{n-10}$$  

100

50

10

1

20

21

15

18

24

27