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Questions and Answers
What is the selling price of the table?
What is the selling price of the table?
- 730 (correct)
- 720
- 746
- 780
What is the average age of the boys in the class now?
What is the average age of the boys in the class now?
- 10.33 years (correct)
- 20 years
- 10 years
- 10.5 years
What is the percentage profit?
What is the percentage profit?
- 16 2/3 (correct)
- 20
- 25
- 15
How many students are there in the row?
How many students are there in the row?
What is the increase in population of the city after three years?
What is the increase in population of the city after three years?
What is the length of the electric pole?
What is the length of the electric pole?
What is the average of the first ten even numbers?
What is the average of the first ten even numbers?
If Q means 'to add', J means 'multiply', T means 'subtract' and K means 'divide by', then what is the value of 30 K 2 Q 3 J 6 T 5?
If Q means 'to add', J means 'multiply', T means 'subtract' and K means 'divide by', then what is the value of 30 K 2 Q 3 J 6 T 5?
If ÷ means ×, – means +, × means – and + means ÷, then what is the value of 20 + 4 × 6-5 ÷ 7?
If ÷ means ×, – means +, × means – and + means ÷, then what is the value of 20 + 4 × 6-5 ÷ 7?
Which of the following is a prime number?
Which of the following is a prime number?
If θ = 90° then sinθ - cosθ =?
If θ = 90° then sinθ - cosθ =?
What type of number is 5 + 3√2?
What type of number is 5 + 3√2?
If x = a, y = b are solutions of the equations x – y = 2 and x + y = 4, then the values of a and b are respectively?
If x = a, y = b are solutions of the equations x – y = 2 and x + y = 4, then the values of a and b are respectively?
What is the next number in the series: 36, 34, 30, 28, 24,...?
What is the next number in the series: 36, 34, 30, 28, 24,...?
If the side of a square is doubled, what will be the change in its area?
If the side of a square is doubled, what will be the change in its area?
What is 15% of 220?
What is 15% of 220?
If 30% of 450 apples are rotten, how many are fine?
If 30% of 450 apples are rotten, how many are fine?
What is the simplification of the expression 100 × 10 – 100 + 2000 / 100?
What is the simplification of the expression 100 × 10 – 100 + 2000 / 100?
A man gave away 1/4 of his property to his daughter, 1/2 to his sons, and 1/5 to charity. What fraction of his property did he give away in total?
A man gave away 1/4 of his property to his daughter, 1/2 to his sons, and 1/5 to charity. What fraction of his property did he give away in total?
In a school, the mean marks obtained by boys and girls were 40% and 60% respectively. What is the average marks obtained in the school in percentage?
In a school, the mean marks obtained by boys and girls were 40% and 60% respectively. What is the average marks obtained in the school in percentage?
If a sum of money doubles itself in 20 years at simple interest, in how many years will it be four times?
If a sum of money doubles itself in 20 years at simple interest, in how many years will it be four times?
If the rate of annual growth of population is 5%, what will be the approximate population of the city after three years if the current population is 140000?
If the rate of annual growth of population is 5%, what will be the approximate population of the city after three years if the current population is 140000?
How many states are there in India?
How many states are there in India?
Where is the Statue of Unity situated?
Where is the Statue of Unity situated?
When is International Women's Day celebrated?
When is International Women's Day celebrated?
Who is called the magician of hockey?
Who is called the magician of hockey?
What does the white stripe of the national flag tricolor indicate?
What does the white stripe of the national flag tricolor indicate?
What is measured using the Richter Scale?
What is measured using the Richter Scale?
Who is the Railway Minister of India?
Who is the Railway Minister of India?
How many Union Territories are there in India?
How many Union Territories are there in India?
What are the factors of (m3 – 4m)?
What are the factors of (m3 – 4m)?
What is the weight of the new person replacing the one who weighed 65 kg?
What is the weight of the new person replacing the one who weighed 65 kg?
How many bricks of 20 cm × 10 cm can be used to make a floor of 25 m × 16 m?
How many bricks of 20 cm × 10 cm can be used to make a floor of 25 m × 16 m?
How long will it take for two trains to cross each other?
How long will it take for two trains to cross each other?
What percentage of candidates will pass in both subjects?
What percentage of candidates will pass in both subjects?
What is the value of 0.0000033 / 0.11?
What is the value of 0.0000033 / 0.11?
Which of the following is a prime number?
Which of the following is a prime number?
What is the total length of the two trains?
What is the total length of the two trains?
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Study Notes
Mathematics
- The average of the first ten even numbers is 11.
- If Q means 'to add', J means 'multiply', T means 'subtract', and K means 'divide by', then 30 K 2 Q 3 J 6 T 5 = 29.
- If ÷ means ×, – means +, × means –, and + means ÷, then 20 + 4 × 6 - 5 ÷ 7 = 28.
Numbers
- 11 is a prime number.
- 5 + 3√2 is an irrational number.
- If α and β are zeroes of the quadratic polynomial x^2 + x – 2, then 1/α + 1/β = 1.
- The factors of (m^3 – 4m) are m(m – 2)(m + 2).
Algebra
- The next number in the series 36, 34, 30, 28, 24... is 22.
- If x = a, y = b are solutions of the equations x – y = 2 and x + y = 4, then the values of a and b are 3 and 1 respectively.
Trigonometry
- If θ = 90°, then sinθ – cosθ = 1.
Statistics
- The average weight of 8 men is increased by 1.5 kg when a new male replaces the man weighing 65 kg. The weight of the new person is 74 kg.
- If 38% of the candidates failed in General Knowledge, 29% of the candidates failed in Mathematics, and 10% of the candidates failed in both, then 43% of the candidates will pass in both subjects.
Geometry
- If the side of a square is doubled, then the area will be 4 times.
Miscellaneous
- 0.0000033 / 0.11 = 0.003.
- 108 m long train crosses an electric pole in 20 seconds. The speed of the train is 32.4 km/h.
- The average age of 15 boys in a class is 11 years. If 5 more boys of 9 years old join the class, then their average age now will be 10.33 years.
- The cost price of 18 articles is equal to the selling price of 15 articles. The percentage profit is 20.
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