Fill in the blank space for the given series | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The given series is $3, 9, 15, . . .$Here,the difference between consecutive terms is constant: $9 - 3 = 6$ and $15 - 9 = 6$.Thus,this is an Arith

Vedclass · Accepted Answer

$123$

Vedclass · Answer

(C) The given series is $3, 9, 15, . . .$Here,the difference between consecutive terms is constant: $9 - 3 = 6$ and $15 - 9 = 6$.Thus,this is an Arithmetic Progression $(A.P.)$ where the first term $a = 3$ and the common difference $d = 6$.The formula for the $n^{th}$ term of an $A.P.$ is $a_n = a + (n - 1)d$.For the $21^{st}$ term $(n = 21)$:$a_{21} = 3 + (21 - 1) 	imes 6$$a_{21} = 3 + 20 	imes 6$$a_{21} = 3 + 120 = 123$.

Fill in the blank space for the given series with the correct alternative.
In the series $3, 9, 15, . . .$ what will be the $21^{st}$ term?

Similar Questions

Fill in the blank space for the given series with the correct alternative.
$0.5, 0.55, 0.65, 0.8, (...)$

Fill in the blank space for the given series with the correct alternative.
Which term of the series $5, 10, 20, 40, \ldots$ is $1280$?

Fill in the blank space for the given series with the correct alternative.
$5, 6, 9, 15, (\ldots), 40$

Choose the correct alternative to fill in the blanks in the series: $abb . . . . baa . . . . a . . . bab . . . . aba$

Find the wrong number in the series :
$3, 8, 15, 24, 34, 48, 63$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Fill in the blank space for the given series with the correct alternative.In the series $3, 9, 15, . . .$ what will be the $21^{st}$ term?