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1. Write the first five terms of each of the sequences in Exercises 1 to 6 whose nth terms are:

$a _n = n ( n +2)$

Answers (1)

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Given : $a _n = n ( n +2)$

$a _1 = 1 ( 1 +2)=3$

$a _2 = 2 ( 2 +2)=8$

$a _3 = 3 ( 3 +2)=15$

$a _4 = 4 ( 4 +2)=24$

$a _5 = 5 ( 5 +2)=35$

Therefore, the required number of terms =3, 8, 15, 24, 35

Posted by

seema garhwal

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