Math, asked by sndymnzs78, 4 months ago

find the sum of 5+8+11+.................20 terms

Answers

Answered by mukeshlic555

1

Answer:

5 + 8 + 11 + 14 + 17 + 20 .

we jump 3 number

HOPE IT WILL HELP YOU !!!!

THANKS

Answered by kabulliwallaha

2

Answer:

S20=20/2(2(5)+(20-1)3)

=10(10+19×3)

=10(10+57)

=670

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