Question

complete the series 4, 20, 60,..........., 120​

Answer 1

Answer:

first term(a)=4

common difference (d)=second term(20)- first term(4)=16

this series can't be completed as common difference are not same.

Step-by-step explanation:

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Answer 2

a=4 d=16 Tn=120 ; a+d(n+1)=120;; 4+16(n-1)=120;; n-1=116÷120620166 ;;app ka question galat hai