## Age problem

If x/2 years ago John was 12 years old, and x/2 years from now he will be 2x years old, what will be his age 3x years from now?
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## Differention of (u/v) form

Find dy/dx if y = (cosx – sinx) / (cosx + sinx)
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## Differention of (u/v) form

Find dy/dx if y =  sinx / (1 + cosx)
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## Find the angles of cyclic quadrilateral In the given figure, calculate each of the angles of the cyclic quadrilateral ABCD. Given angle AOD = 64 deg.
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## Inequality- Find least value of Y

If 7+y = |8|, find the least value of y, such that 10<= y <= 30.
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## Money double problem

A sum of money triples itself in 20 years. When will it double? Options are: a) 5 years b) 15 years c) 10 years d) 8 years
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## Line equation

If line y= -3x+K is tangent to the circle x^2 +y^2 = 10, find all the possible values of K

## Logarithm

Prove that: log base 16 (XY) = 1/2 log base 4 (X) + 1/2 log base 4 (Y) Include the logarithmic rules used to prove the statement.
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## Arithmetic Progression: Find x and y

If 3, x, y and18 are arithmetic progression (), find x and y.
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## Probability- Even numbers greater than 5000

How many even numbers greater than 5000 can be formed using the digits 1,2,4,5,6. No digits used more than once.
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## Word problem

A garrison of 120 men is provisioned for 24 weeks at 350 gm per day per man. How many men must leave so that the same provision may last...
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## Find the average speed

For the first 100 miles of his trip, Sohan drove at 50 miles/hr. Then because of delays, he drove only 39 miles/hr for next 120 miles. What was his...
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## Logic Time

There was war in a certain village and a man, his wife and two sons were trying to cross to the other side of the river so that they...
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## Exponential

Question source : Facebook que source ( × 10 to power 3)÷(7×10 to the power of-3) -5×10 to the power of-4 + × 10to power of-3 Evaluate the answer...
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## Find the Surface area and volume of the box

Problem source: Source A box has length 15cm,breadth 7cm and height 8cm. Find: (a)its total surface area? (b)its volume?
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## Avg. Monthly income

A man spends Rs. 1600 per month on an average for the first three months, Rs 1550 for next four months and Rs. 1800 per month for the last...
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## SCIENCE

Which one of the metal is liquid at normal temperature- a) zinc b) mercury c) sodium d) water
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## SCIENCE

Protective sols are – a) lyophilic b) lyophobic c) both a and b d ) none

## element

Which one of following elements is found in free state in nature – a) sodium b) iron c) zinc d) gold
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## SCIENCE

The least distance of distinct vision for a young adult with normal vision is about a) 25 m b) cm  c) 25 cm d) m
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## science

The far point of a myopic person is 80 cm in front of the eye . What is the nature and power of the lens required to correct the...
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## science

The change in focal length of an eye lens is caused by the action of  A) Retina B) Iris C) Pupil D) Ciliary muscles
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## science

The human eye forms the image of an object at its a) C0rnea                   b) iris          ...
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## probability

A dice is rolled twice . What is the probability of getting a sum equal to 9? a) 2/9                 b) 2/3...
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## Probability

A box contains 20 balls out of which 12 are red and 8 are green . 5 balls are randomly drawn from the box with replacement . What is...
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