A certain lab experiments with white and brown mice only. In one experiment , 2/3 of the mice are how many mice in total are in the experiment?

A certain lab experiments with white and brown mice only. In one experiment , 2/3 of the mice are how many mice in total are in the experiment? Correct Answer 39

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A certain lab experiments with white and brown mice only. IN one experiment, 2/3 of the mice are white. If there are 13 brown mice in the experiment how many mice in total are in the experiment?
The film director wants an actress for the lead role of Lucy who perfectly fits the description that appears in the original screenplay. He is not willing to consider actresses who do not resemble the character as she is described in the screenplay, no matter how talented they are. The screenplay describes Lucy as an average-sized, forty something redhead, with deep brown eyes, very fair skin, and a brilliant smile. The casting agent has four actresses in mind.

Actress #1 : is a stunning red-haired beauty who is 5'9" and in her mid-twenties. Her eyes are brown and she has an olive complexion.
Actress #2 : has red hair, big brown eyes, and a fair complexion. She is in her mid-forties and is 5'5".
Actress #3 : is 5'4" and of medium build. She has red hair, brown eyes, and is in her early forties.
Actress #4 : is a blue-eyed redhead in her early thirties. She's of very slight build and stands at 5'.
Statements followed by some conclusions are given below. Statements :
1. Tea is green, Coffee is brown and Milk is white.
2. More than half of the town likes tea.
3. People who like white don't like green and some people who like brown don't like white. Conclusions :
1. Green is more popular in the town.
2. There is at least one coffee drinker who does not like tea. Find which of the given conclusions logically follows from the given statements.
A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a pair of black socks is double that of a brown pair. While preparing the bill the clerk interchanged the number of black and brown pairs by mistake which increased the bill by 50% . The ratio of the number of black and brown pairs of socks in the original order was = ?
You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Question:
What is the colour of Jasmine?
Statements:
I. Blue is called white, white is called red and red is called yellow.
II. Yellow is called purple, purple is called black, white is called brown and brown is called orange.
Question : What is the colour of the fresh grass ?

Statements :
I. Blue is called green, red is called orange, orange is called yellow.
II. Yellow is called white, white is called black, green is called brown and brown is called purple.
If 'blue' means 'green', green' means 'yellow' 'yellow' means 'orange', 'orange' means 'black', 'black' means 'white', 'white' means 'red', 'red' means 'pink', 'pink' means 'brown', 'brown' means 'grey', than what is the color of human blood?
Two black female mice are coupled with a brown male mouse. If female A produces 4 black and 3 brown children and female B in its litter produces 10 black children, what is the genotype of A, B and male mouse respectively?
A store owner brought a lot of hats, 1/4th of which was brown. He sold 2/3 of the hats including 4/5 of the brown hats. What fraction of the unsold hats was brown?
A millionaire bought a lot of hats $$\frac{1}{4}$$ of which were brown. The millionaire sold $$\frac{2}{3}$$ of the including $$\frac{4}{5}$$ of the brown hats. What fraction of the unsold hats were brown ?