Question

20th term of 1, 11, 21, 31,

Answer 1

Step-by-step explanation:

20th term = a+(n-1) d

= 1 + (20-1)10

= 191

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Answer 2

Answer:

191

Step-by-step explanation:

nth term=a+(n-1)d

a=1, n=20, d=10

1+(20-1)×10= 1+ 19×10=1+190=191