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.

Find the sum of the first 22 terms of the A.P. : 1, 3, -2, …………….

1.   Find the sum of the first 22 terms of the A.P. :

1, 3, -2, …………….

7. How many three digit numbers are divisible by 87?

   How many three digit numbers are divisible by 87?

6. Find the value of p, if x, 2x+p and 3x+6 are in A.P.

1.   Find the value of p, if x, 2x+p and 3x+6 are in A.P.

5. If the third term of an A.P. is 5 and the seventh term is 9, find the 17th term.

1.   If the third term of an A.P. is 5 and the seventh term is 9, find the 17^th term.

4. The sum of the 4th and the 8th terms of an A.P. is 24 and the sum of the 6th and the 10th terms of the same A.P. is 34. Find the first three terms of the A.P.

   The sum of the 4^th and the 8^th terms of an A.P. is 24 

and the sum of the 6^th and the 10^th terms of the same A.P. is 34. 

Find the first three terms of the A.P.

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