1.

Find the nth term of an AP 5,11,16,28

Answer»

Answer:

( 6 n - 1 )

Step-by-step explanation:

Given :

A.P. = 5 , 11 , 16 , 28 .....

We have

FIRST term ( a ) = 5

Common DIFFERENCE ( d ) = second term - first term

                                        = 11 - 5 = 6

We do not have numbers of term ( n )

We know formula for n th term

n th = a + ( n -1 ) d

where

a = first term

d = common difference

n = numbers of term

putting values in formula

n th = 5 + ( n -1 ) 6

n th = 5 + 6 n - 6

n th = 6 n - 1

Thus we get answer ( 6 n - 1 ).


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