Math, asked by Nishthashree5172, 1 year ago

Check whether 51 is a term of ap 5,8,11,14

Answers

Answered by udayninja95
7

given:-a=5 and   d= 3     An=51

An=a+(n-1)d

51=5+(n-1)3                                                                                                                                           51=5+3n-3                                                                                                                                            51-2=3n                                                                                                                                                      49/3=n                                                                                                                                                 n=1.63..     since n can't beintegers 51 is not in the term of ap 5,8,11,14...

Answered by abrar8996
4

*:..。o○☆ HEYA MATE !☆○o。..:*

GIVEN :

The A.P is 5,8,11,14,......

From this ,

The first term, a = 5

The common difference , d = t2 - t1

d = 8 - 5

d = 3

TO FIND :

Whether 51 is the term of the AP.

SOLUTION:

The general term,tn

tn = a + (n - 1)d

where n is the nth term.

tn = a + ( n - 1 ) d

51 = 5 + ( n - 1 ) 3

51 = 5 + 3n - 3

51 = 3n + 2

3n = 51 - 2

3n = 49

n = 49/3 ( fraction )

Since n is a fraction,,,, 51 does not belong to this AP

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