Reference no: EM13884117
1. The nth term of an A.P. is 6n+2. Find the common difference
2. Find the 6th term from the end of the A.P. 17, 14, 11,......,-40
3. For what values of n is the nth term of the following two A.P.'s the same
A.P.1 = 1, 7, 13,...
A.P.2 = 69, 68, 67,....
4. If the 8th term is f an A.P. is 31 and the 15th term is 16 more than the 11th term. Find the A.P.
5. Which term of the A.P. 5, 15, 25,.... will be 130 more than its 31st term?
6. The sum of 5th and 9th term of an A.P. is 72 and the sum of 7th and 12th term is 97. Find A.P.
7. Find the sum of first 25 terms of an A.P. whose nth term is Tn = (7-3n)
8. If 2x, x+10, 3x+2 are in A.P. find the value of x?
9. Three numbers are in A.P. If the sum of these numbers is 27 and their product is 648. Find the numbers?
10. Prove that the sum of n terms of an A.P. is n/2{2a+(n-1)d}.
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