15. The 6th term of an A.P. is 16 and the 14th term is 32. Determine the 36th term.

1.   The 6^th term of an A.P. is 16 and the 14^th term is 32. Determine the 36^th term.

14. Split 207 into three parts such that these parts are in A.p. and the product of the two smaller parts is 4623.

1.   Split 207 into three parts such that these parts are in A.p. and the product of the two smaller parts is 4623.

13. Divide 96 into four parts which are in A.P. and the ratio between the product of their means and the product of their extremes is 15 : 7.

1.   Divide 96 into four parts which are in A.P. and the ratio between the product of their means and the product of their extremes is 15 : 7.

12. The angles of a quadrilateral are in A.P. with common difference 20 degree. Find its angles.

   The angles of a quadrilateral are in A.P. with common difference 20 degree. Find its angles.

11. The sum of the three consecutive numbers of an A.P. is 21 and the sum of their squares is 165. Find these terms.

1.   The sum of the three consecutive numbers of an A.P. is 21 and the sum of their squares is 165. Find these terms.

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10. Find the sum of 7 lying between 300 and 700.

 Find the sum of 7 lying between 300 and 700.

Find the sum of : (i) All odd natural numbers smaller than 50. (ii) First 12 natural numbers that are multiples of 7.

 Find the sum of :

(i)              All odd natural numbers smaller than 50.

(ii)           First 12 natural numbers that are multiples of 7.