Find out the sum of series 3+4+8+9+13+14+18+19+....upto 20 terms.
Answers
Answered by
3
Answer:
535
Explanation:
3+4+8+9+13+14+18+19+23
+24+28+32+33+37+38+42
+43+47+48+52=535
Answered by
27
Answer:
The sum of series up to 20 terms
= 3+4+8+9+13+14+18+19+....upto 20 terms
= (3+4)+(8+9)+(13+14)+(18+19)+....upto 10 terms
= 7 + 17 + 27 + 37 +....... upto 10 terms
= 10/2 [ 2×7+(10-1)(10) ]
= 5(14+90)
= 520 Answer
Similar questions