1.

27 Decide whether following sequence is an A.P., if so find the 20th term of theprogression-12, -5, 2, 9, 16, 23, 30,...

Answer»

Yes it is an apas comman difference is samea = -12d = 7now 20th term= a+19d= -12+19*7-12+ 133121

a=-12; d = 7; 20 th term = -12 +19(7)=-12+133=121



Discussion

No Comment Found