Find the A.P. whose nth term is 7 – 3K. Also, find the 20th term.

Find the A.P. whose nth term is 7 – 3K. Also, find the 20th term.

Solution:

Find the indicated terms in each of following A.P.s:
(i) 1, 6, 11, 16, …; a₂₀
(ii) -4, -7, -10, -13, …, a₂₅, a_n

Solution:

More Solutions:

• Check whether -150 is a term of the A.P. 11, 8, 5, 2, …
• Find the 20th term from the last term of the A.P. 3, 8, 13, …, 253.
• Find the sum of the two middle most terms of the A.P.
• Determine the A.P. whose third term is 16 and the 7th term.
• Find the 31st term of an A.P. whose 11th term is 38 and 6th term is 73.
• The 15th term of an A.P. is 3 more than twice its 7th term.