Math, asked by 123456789105, 1 year ago

1,5,9..... what is the sum of first 20 terms of this arithmetic sequence?

Answers

Answered by sonu319

1

1+5+9+13+17+21+25+29+33+37+41+45+49+53+57+61+65+69+73+77=780

123456789105: Thanks

sonu319: welcome

Answered by krish144

1

1+5+9+13+17+21+25+29+33+.....=780

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