What should be added to each of 12,22,42...

What should be added to each of 12,22,42,72 to make the sums proportional?

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UNITED BOOK HOUSE-VIDYASAGAR VIDYAPITH MIDNAPORE-EXERCISE

Write True or False If mean of the numbers 7,9,x,12,y,17 is 11 then x...
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In 1 year if the ratio of principal and amount is 8:9 , then calculate...
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What should be added to each of 12,22,42,72 to make the sums proportio...
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In a business , A,B,C invest Rs 500 , Rs 450 and Rs 700 respectively. ...
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If x^2+y^2 alpha xy then show that x+y alpha x-y.
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Length of two chords of a circle with centre at O are 6 cm and 8 cm. I...
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In triangleABC, AB=AC. If we draw a circle with diameter AB, the circl...
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The lengths of radii of two circles are 8 cm and 3 cm and the distance...
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If cos^2 theta-sin^2 theta= 1/2 then cos^4 theta-sin^4 theta=?
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If sec 5 theta= cosec(theta+36^@) and 5 theta is a positive acute angl...
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If the lengh of diagonal of a cube is 6 cm then find the total surface...
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The length of radius of a right circular cylinder is decreased by 50% ...
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If ui = (xi-25)/10 sumfiui = 20 and sumfi = 100, find barx.
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At present the sum of the number of students in all the secondary inst...
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Pradipbabu and Aminabiib started a business jointly by investing Rs 24...
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Solve : (x+3)/(x-3)+(x-3)/(x+3)= 2 1/2,x!=+-3.
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The spedd of a boat in still water is 8 km/hr. if the boat can go 15...
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If x= (sqrt7+sqrt3)/(sqrt7-sqrt3) and xy = 1, find the value of (x^2+3...
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If 5 men can cultivate om 10 bighas of land in 9 days, calculate by t...
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If a,b,c,d are in continued proportion then show that (b-c)^2+(c-a)^2+...
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