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2.4+4.7+6.10+.....(n-1)" terms "=...

2.4+4.7+6.10+.....(n-1)" terms "=

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2.4 + 4.7 + 6.10+ …. upto (n-1) terms=

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

(1)/(1 . 4 . 7)+(1)/(4 .7 . 10)+(1)/(7 . 10 . 13)+.. . to n terms =

Let S=1/(1.4)+1/(4.7)+1/(7.10)+.....+ n terms observe the following lists

Let S=(1)/(1.4)+(1)/(4.7)+(1)/(7.10)+....+n terms observe the following lists

Prove by mathematical induction that 1.4+4.7+7.10+…. up to n terms =n(3n^(2)+3n-2)

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)