Menu Close

1-2-3-4-1-3-4-5-1-4-5-6-1-5-6-7-1-6-7-8-1-12-13-14-




Question Number 148838 by liberty last updated on 31/Jul/21
 (1/(2×3×4)) +(1/(3×4×5))+(1/(4×5×6))+(1/(5×6×7))+(1/(6×7×8))+...+(1/(12×13×14))=?
$$\:\frac{\mathrm{1}}{\mathrm{2}×\mathrm{3}×\mathrm{4}}\:+\frac{\mathrm{1}}{\mathrm{3}×\mathrm{4}×\mathrm{5}}+\frac{\mathrm{1}}{\mathrm{4}×\mathrm{5}×\mathrm{6}}+\frac{\mathrm{1}}{\mathrm{5}×\mathrm{6}×\mathrm{7}}+\frac{\mathrm{1}}{\mathrm{6}×\mathrm{7}×\mathrm{8}}+…+\frac{\mathrm{1}}{\mathrm{12}×\mathrm{13}×\mathrm{14}}=? \\ $$
Commented by JDamian last updated on 31/Jul/21
Can you confirm there is a missing (1/(4×5×6))?
$${Can}\:{you}\:{confirm}\:{there}\:{is}\:{a}\:{missing}\:\frac{\mathrm{1}}{\mathrm{4}×\mathrm{5}×\mathrm{6}}? \\ $$
Commented by liberty last updated on 31/Jul/21
yes typo
$$\mathrm{yes}\:\mathrm{typo} \\ $$
Commented by EDWIN88 last updated on 31/Jul/21
= ((22)/(273)) .
$$=\:\frac{\mathrm{22}}{\mathrm{273}}\:. \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *