What is the sum of the first 20 terms of the AP 4,2,0

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

5 0

Answer:

-420

Step-by-step explanation:

common difference= 2-4 =-2

we have,

first term=4

now using the formula,

S=N/2(2a+(n-1)d

so the answer is -420

77julia77 [94]3 years ago

4 0

bababbabababbababbabababbababa

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