CBSE Class 11-science Maths Sequences and Series

• If H is the HM between p and q then h/p+h/q
  
• 1/1.3+1/2.5 +......+1/n(2n+1)
• Sum the series to n terms  1.2.4+2.3.7+3.4.10+...
• Sum of term: 1^3+3^3+5^3+7^3....
• PLEASE HELP
  
• 15th 
  
• Find the sum of n terms of the series whose nth term is n² + 2ⁿ.
• Find the sum of the series 1 + (1 + 2) + (1 + 2 + 3) + … up to n terms.
• Find the sum to n terms of the series
• Find the sum of the following series: 5 + 7 + 13 + 31 + 85 + …

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