Question

In an AP S7 = 44 and S6 = 39 then 7th term of AP is
A) 5 B) 12 C) 15 D) 8

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Answer 1

Answer:

the correct answer is (A) 5

hope it helps you

Answer 2

A)5

Step-by-step explanation:

Given:In an A.P

$S_7=44$

$S_6=39$

Sum of n terms

$S_n=a_1+a_2+a_3+...+a_n$

Using the formula

$S_7=a_1+a_2+a_3+a_4+a_5+a_6+a_7$

$S_6=a_1+a_2+a_3+a_4+a_5+a_6$

$S_7-S_6=a_1+a_2+a_3+a_4+a_5+a_6+a_7-(a_1+a_2+a_3+a_4+a_5+a_6)$$44-39=a_1+a_2+a_3+a_4+a_5+a_6+a_7-a_1-a_2-a_3-a_4-a_5-a_6$

$44-39=a_7$

$a_7=5$

Hence option A is true.

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