Find the odd man out: 41, 43, 47, 53, 61, 71, 73, 81

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Find the odd man out: 41, 43, 47, 53, 61, 71, 73, 81

A61

B71

C73

D81

Nithin K ? Apr 21 '2018 at 21:39

Answer: Option D [81]

Explanation:

Each of the numbers except 81 is a prime number.

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If 2A = 3B and 4B = 5C. then A:C Is:

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If 2A = 3B and 4B = 5C. then A:C Is:

A4:3

B08:15

C15:8

D3:4

Nithin K ? Apr 21 '2018 at 21:35

Correct Answer: C [15:8]

Explanation:

Given 2A = 3B

and 4B =5C => B=\(\frac{5}{4}C\)

\(\implies 2A=3B=3\times\frac{5}{4}C\)

\(\implies A =\frac{5}{4}C\)

\(\implies \frac{A}{C}=\frac{15}{8}=15:8\)

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If log_{3}x = 2. then x Is equal to

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$$\text{If } log_{3}x = 2. \text{ then x is equal to:}$$

A-9

B-6

C-8

D$$\frac{1}{9}$$

Nithin K ? Apr 21 '2018 at 21:6

Correct Answer: D [\(\frac{1}{9}\)]

Explanation:

\(\text{log}_{3}x =-2\)

\(x = 3^{-2}\)

\(x=\frac{1}{9}\)

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Which gas leaked In Bhopal gas tragedy?

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Which gas leaked In Bhopal gas tragedy?

ACarbon monoxide

BMethyl Isocynate

CEthyl cyanide

DPhenyl isocynate

No answer description available for this question. Let us discuss.

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4+4 18 - 6 -8

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$$\frac{4+4 \times 18 - 6 -8}{123 \times 6 - 146 \times 5} =?$$

A1

B2

C6.65

D7.75

Nithin K ? Apr 21 '2018 at 20:35

Correct Answer: D [7.75]

Explanation:

Using  the BODMAS Rule:

\(\frac{4+4\times18-6-8}{123\times6-146\times5}\)

\(= \frac{4+72-6-8}{2(123\times3-73 \times5)}\)

\(=\frac{76-14}{2(369-365)}\)

\(=\frac{62}{2 \times 4}\)

\(=\frac{31}{4}\)

\(=7.75\)

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Bauxite is an ore of

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Bauxite is an ore of

AIron

Bzinc

Ctin

Daluminium

Nithin K ? Apr 21 '2018 at 20:14

Answer is: D [aluminium]

Explanation:

It is a mixture of hydrous aluminum oxides, aluminum hydroxides, clay minerals, and insoluble materials such as quartz, hematite, magnetite, siderite, and goethite. The aluminum minerals in bauxite can include: gibbsiteAl(OH)3, boehmite AlO(OH), and, diaspore, AlO(OH).

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Which of the following is always found In free stable in nature ?

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Which of the following is always found In free stable in nature ?

AGold

BSilver

CSodium

DCopper

Nithin K ? Apr 21 '2018 at 20:6

Correct Answer: A [Gold]

Explanation:

Gold is chemically very less active and hence found in free state in nature.

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