Question

The nh term on an A.P is 6n + 2. Find its common difference.

Which term of the A.P: 21426384 is 420 ?

Find a and b, such that 12, a +b, b are in A.P.

How many number of two digits are divisible by 5.

Which term of the A.P; 24, 21, 18, .. is the first negative term ?

II. Short answer type I questions :

6.

Find the 10th term from the end of the A.P: 81012126

7. Find the sum of the first 50 odd natural numbers,

8. If 8th term of an A.P is 31 and 15th term is 16 more than 11th term, find the A.P.

III. Short answer type - II questions:

5 x1 = 5 M

3 x 2 = 6 M

4 x 3 = 12 M

Find the three numbers in A.P. Whose sum is 15 and the product is 80.

9. 10. If the sum of first fourteen terms of an A.P. is 1050 and its first terms is 10, find its 20th term. 11. The first term of an A.P is 5, the last term is 45 and the sum of all terms in A.P is 400. Find

the number of terms and the common difference.

1

12. If x+2' x+3 and are in A.P find the value of x.​

Answer 1

Answer:

we know that nth term of Ap is a +( n-1)d if u expand that u will.get a-d + dn so comparing things u will get that common difference is 6... hope it helps u mate...