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2+3+5+6+8+9+ ........2n terms=...

`2+3+5+6+8+9+ ........2n` terms=

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3.6+4.7+5.8+.....+(n-2) terms =

Prove 1.4.7+2.5.8+3.6.9+....... upto n terms =(n)/(4)(n+1)(n+6)(n+7)

Prove 1.4.7+2.5.8+3.6.9+....... upto n terms =(n)/(4)(n+1)(n+6)(n+7)

Prove 1.4.7+2.5.8+3.6.9+....... upto n terms =(n)/(4)(n+1)(n+6)(n+7)

Prove 1.4.7+2.5.8+3.6.9+....... upto n terms =(n)/(4)(n+1)(n+6)(n+7)

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Sum the series 3. 8+6. 11+9. 14+............... to n terms.

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