Maths-
General
Easy

Question

The largest value of r satisfying inequality 20Cr greater or equal than 320Cr – 1 is -

  1. 4    
  2. 5    
  3. 6    
  4. 7    

The correct answer is: 5

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General
maths-

A double decker bus can accommodate (u + ell) passengers, u in the upper deck and ell in the lower deck. The number of ways in which the (u + ell) passengers can be distributed in the two decks, if r (less or equal than ell) particular passengers refuse to go in the upper deck and S(less or equal thanu) refuse to sit in the lower deck, is -

A double decker bus can accommodate (u + ell) passengers, u in the upper deck and ell in the lower deck. The number of ways in which the (u + ell) passengers can be distributed in the two decks, if r (less or equal than ell) particular passengers refuse to go in the upper deck and S(less or equal thanu) refuse to sit in the lower deck, is -

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Domain of f(x) = log10(log10(1 + x3)) is -

Domain of f(x) = log10(log10(1 + x3)) is -

maths-General
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The correct orders about compounds I and II are:
i) 
ii) 

The correct orders about compounds I and II are:
i) 
ii) 

chemistry-General
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Which of the following is correct method for separating a mixture of following compounds?

Which of the following is correct method for separating a mixture of following compounds?

chemistry-General
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chemistry-

The order in which the reagent must be used to separate the compound I - IV is:

The order in which the reagent must be used to separate the compound I - IV is:

chemistry-General
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Decreasing order of solubility of following compounds is:
i) 
ii) 
iii) 
iv) 

Decreasing order of solubility of following compounds is:
i) 
ii) 
iii) 
iv) 

chemistry-General
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Which of the following statement is correct about tropolone?

Which of the following statement is correct about tropolone?

chemistry-General
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In which case first has higher solubility than second?
I) Phenol, Benzene
II) Nitrobenzene, Phenol
III) o–Hydroxybenzaldehyde, p–Hydroxy benzaldehyde
IV) CH3CHO, CH3–O–CH3
V) o–Nitrophenol, p–Nitrophenol
VI) 

In which case first has higher solubility than second?
I) Phenol, Benzene
II) Nitrobenzene, Phenol
III) o–Hydroxybenzaldehyde, p–Hydroxy benzaldehyde
IV) CH3CHO, CH3–O–CH3
V) o–Nitrophenol, p–Nitrophenol
VI) 

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chemistry-

Arrange the following in decreasing order of their solubility in water

Arrange the following in decreasing order of their solubility in water

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18 points are indicated on the perimeter of a triangle ABC (see figure). How many triangle are there with vertices at these points ?

18 points are indicated on the perimeter of a triangle ABC (see figure). How many triangle are there with vertices at these points ?

maths-General
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Maths-

If A and B are two events such that P left parenthesis A union B right parenthesis equals 5 over 6 comma P left parenthesis A intersection B right parenthesis equals 1 third and P left parenthesis A right parenthesis equals 2 over 3 then A and B are

If A and B are two events such that P left parenthesis A union B right parenthesis equals 5 over 6 comma P left parenthesis A intersection B right parenthesis equals 1 third and P left parenthesis A right parenthesis equals 2 over 3 then A and B are

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maths-

Number of rectangles in the grid shown which are not squares is:

Number of rectangles in the grid shown which are not squares is:

maths-General
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maths-

If  P left parenthesis A with not stretchy bar on top right parenthesis equals 0.7 comma P left parenthesis B right parenthesis equals 0.7  and P left parenthesis B divided by A right parenthesis equals 0.5 then P left parenthesis A intersection B right parenthesis equals

If  P left parenthesis A with not stretchy bar on top right parenthesis equals 0.7 comma P left parenthesis B right parenthesis equals 0.7  and P left parenthesis B divided by A right parenthesis equals 0.5 then P left parenthesis A intersection B right parenthesis equals

maths-General
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chemistry-

The correct order of solubility in water is:
a) CH3OH
b) CH3CH2OH
c) 
d) 

The correct order of solubility in water is:
a) CH3OH
b) CH3CH2OH
c) 
d) 

chemistry-General
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Decreasing order of melting point of compound I - IV follows:
i) 
ii) 
iii) 
iv) 

Decreasing order of melting point of compound I - IV follows:
i) 
ii) 
iii) 
iv) 

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