The value of 1-40 - -20 - -10 - -80 is equal to

The correct option is C 1/70 ( 3 √(10) + 2 √(5) ) Given, 1√(40)+√(20)+√(10) √(80) =12√(10)+2√(5)+√(10) 4√(5) =13√(10) 2√(5) Multiplying and ...

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Cube-Root of Fractional Numbers

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Question

The value of $\frac{1}{\sqrt{40} + \sqrt{20} + \sqrt{10} - \sqrt{80}}$ is equal to

\frac{1}{70} (3 \sqrt{10} + 2 \sqrt{5})

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\frac{3 \sqrt{10} - 2 \sqrt{5}}{70}

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\frac{3 \sqrt{10} + 2 \sqrt{5}}{50}

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none of these

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Similar questions

Class	$0 - 10$	$10 - 20$	$20 - 30$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$5$	$4$	$3$	$2$	$2$	$1$	$1$

50

10

80

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$2$	$5$	$8$	$16$	$9$	$5$	$3$	$2$

Class:	0-10	10-20	20-30	30-40	40-50	50-60	60-70	70-80
Frequency:	18	16	15	12	10	5	2	1

32.5

Class interval:	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	Total
Frequency:	$f_{1}$	$5$	$9$	$12$	$f_{2}$	$3$	$2$	$40$

^{10} C_{1} +^{10} C_{3} +^{10} C_{5} +^{10} C_{7} +^{10} C_{9} =

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