Math, asked by dashbapi11, 6 months ago

T4=11 T10=16 T21=? plz solve this

Answers

Answered by katakamsirisha

1

t4=11 t10=16

a+3d=11 a+9d=16

a+3d=11

-a+9d=16

_________

0-6d=-5

6d=5

d=5/6

a+3(5/6)=11

a+5/2=11

a=11-5/2

a=17/2

t21=a+20d

=17/2+20(5/6)

=17/2+50/3

=51/6+100/6

=151/6

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