Question

In an A.P. if a=1,d=3 then find t11

Answer 1

a=1

d=3

t11=a+10d

t11=3+10(3)

t11=3+30

t11=33

Answer 2

Here is the answer .....
In A.P
a = 1
d = 3
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The
$t_{11} \: \: = \: a + (n - 1)d$
$= 1 + (11 - 1) \times 3 \\ = 1 + 10 \times 3 \\ = 1 + 30 \\ = 31$
Hence the answer is 31.....
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Hope It helps