The 14th term of ap is 96. While the 25th term is 173. Find (a ) 19th term b,sum of 13th and 50th term c, product of 6th and 13th term
The 14th term of ap is 96. While the 25th term is 173"
a+13d = 96
a+24d = 173
subtract ...
11d = 77
d = 7, then back in a+13d=96, a = 5
now you can find any term, and do the required calculation
e.g. product of 6th and 13th term:
term6 = a + 5d = 5 + 35 = 40, term13 = a + 12d = 89
their product = 40(89) = 3560
do the other parts in the same way