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Author: Tinku Tara

3000000-3000000-4000000-4000000-

Question Number 139278 by Agnibhoo last updated on 25/Apr/21 $$\sqrt{\frac{\mathrm{3000000}\:+\:\mathrm{3000000}}{\mathrm{4000000}\:+\:\mathrm{4000000}}}\:=\:? \\ $$ Answered by Rasheed.Sindhi last updated on 25/Apr/21 $$\sqrt{\frac{\mathrm{6}×\cancel{\mathrm{1000000}}}{\mathrm{8}×\cancel{\mathrm{1000000}}}}=\frac{\sqrt{\mathrm{3}}}{\mathrm{2}} \\ $$ Commented by otchereabdullai@gmail.com…

k-1-1-k-2k-1-k-2-

Question Number 139257 by bobhans last updated on 25/Apr/21 $$\:\:\:\:\underset{\mathrm{k}=\mathrm{1}} {\overset{\infty} {\sum}}\:\frac{\left(−\mathrm{1}\right)^{\mathrm{k}} \left(\mathrm{2k}−\mathrm{1}\right)}{\mathrm{k}^{\mathrm{2}} }\:=? \\ $$ Answered by john_santu last updated on 25/Apr/21 $$\:\:\:\:\underset{{k}=\mathrm{1}} {\overset{\infty}…