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A cylindrical pencil sharpend at one edge is the combination of

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A cylinder pencil sharpened at one edge is the combination of

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3 pencils and 4 pens cost Rs. 270 while 4 pencils and 3 pens cost Rs. 150 . Find the combined cost of one pencil and one pen.

A cylindrical pencil of diameter 1.2 cm has one of its end sharpened into a conical shape of height 1.4 cm. The volume of the material removed is:

A factory manufactures 1,20,000 pencils daily. The pencils are cylindrical in shape each of length 25 cm and circumference of base as 1.5 cm. Determine the cost of colouring the curved surfaces of the pencils manufactured in one day at Rs. 0.05 per dm^(2) .

EDUCART PUBLICATION-SAMPLE PAPER 8-PART-A (SECTION-I)
  1. Find the value of k for which the polynomial 21 x ^(2) - 3 kx + 7 has ...

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  2. If the value of 'x' in the equation 2x + 3y = 13 is 2, then find the c...

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  3. Find the ratio in which x-axis divides the join of points (2, -3) and ...

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  4. The coordinates of the point P dividing the line segment joining the p...

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  5. If Delta ABC ~ Delta DEF and AB = DE, BC = 8 cm, then the value of EF...

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  6. ABC is a right triangle, right angled at C and AB = sqrt2 BC. Then, fi...

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  7. The ratio fo the height of a tower and the length of its shadow is sqr...

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  8. Find the value of &nbspsec ^(2)45 ^(@) cos 45 ^(@)-"cosec"^(2) 30^(@)...

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  9. Find the 10^(t h)term of the AP : 2, 7, 12, . . .

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  10. Find the sum of the first 10 multiples of 2.

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  11. Write a quadratic polynomial whose zero are 2 and -5.

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  12. The sum of the digits of a 2-digit number is 10. A number is selected ...

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  13. In a single throw of a die, what is the probability of getting a prime...

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  14. Find the median of the given data: 2, 4, 6, 12, 3, 5, 10, 8, 2, 4, ...

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  15. If theta is the angle (in degrees) of a sector of a circle of radius...

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  16. A cylindrical pencil sharpend at one edge is the combination of

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  17. If one zero of p (y) = 4y ^(2) - 8 ky - 9 is negative of other, then f...

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  18. Find the value of k if the given system of equations 5x + ky = - 7 and...

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  19. AT is a tangent to circle with centres such that OT = 4 cm and angle O...

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  20. If &nbspDelta ABC ~ Delta PQR &nbsp , perimeter of Delta ABC = 32 cm, ...

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