Question

for an ap a=7.5,d=0,n=100 then tn=?​

Answer 1

In an arithmetic progression,

• a = 7.5
• d = 0
• n = 100
• ${\sf{t_n \: = ?}}$

Using formula:

• ${\small{\underline{\boxed{\sf{t_n \: = a + (n-1)d}}}}}$

Required solution:

$:\implies \sf t_n \: = a + (n-1)d \\ \\ :\implies \sf t_n \: = 7.5 + (100-1)0 \\ \\ :\implies \sf t_n \: = 7.5 + (99)0 \\ \\ :\implies \sf t_n \: = 7.5 + 0 \\ \\ :\implies \sf t_n \: = 7.5 \\ \\ {\pmb{\sf{Henceforth, \: solved!}}}$