In an arithmetic sequence Sn=n? - 2n. Use your formula in 2c to determine the values of
a) T7 =

b) T50=
​

12/11c

or

12

c

11

6 and 24

step-by-step explanation:

6 x 4 = 24

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube

the correct answer is c