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The first term of an A.P. is 5, the last...

The first term of an A.P. is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

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The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.

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AGRAWAL PUBLICATION-SAMPLE PAPER 10-EXERCISE
  1. The product of the LCM and HCF of two numbers is 24.The difference of ...

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  2. How many spherical lead shots each 4.2 cm in diameter can be obtain...

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  3. The first term of an A.P. is 5, the last term is 45 and the sum is 400...

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  4. A tree is broken by the wind. The top of that tree struck the ground a...

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  5. Theorem 6.8 : In a right triangle, the square of the hypotenuse is equ...

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  6. Write any two irrational numbers whose product is rational number.

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  7. LCM of ( 2^(3) xx 3 xx5) and ( 2^(4) xx 5xx 7) is

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  8. A quadratic polynomial , whose zeroes are -3 and 4 is

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  9. Discuss the nature of the quadratic equation 2x^(2)+x+4=0

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  10. Write the 2nd term of the AP, if its S(n)=n^(2)+2n.

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  11. Find the roots of x+(1)/(x)=2

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  12. Write a pair of linear equations which has the unique solution x=-1,y=...

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  13. If the distance between the points (4,p) and (1,0) is 5 , then find t...

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  14. Find the distance between the points (0, 6) and (0, -2).

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  15. A tangent PQ at a point P of a circle of radius 5 cm meets a line thro...

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  16. State and prove the Pythagoras theorem.

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  17. From a tank containing 10 male fish and 12 female fish, a fish is take...

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  18. Find the number if eight times of its is added to its square, the sum ...

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  19. Find the value of (1+cos A)(1-cos A)cosec^(2)A.

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  20. Find the maximum value of (1)/(cosectheta)

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