Question

2. N
es
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If the last term of an A.P. is 119 and the 8th term from the end is 91, the common difference of the
A.P.is​

Answer 1

The common difference of the A.P is 4.

Step-by-step explanation:

Consider the provided information.

It is given that the last term if an A.P. is 119 and the 8th term from the end is 91.

Let us assume that the last term is the first term.

Now use the formula of A.P as shown below:

$a_n=a+(n-1)d$

$91=119+(8-1)d$

$91-119=7d$

$-4=d$

We know that the given A.P is increasing as 8th term is the smaller than the last term.

That means the common difference must be a positive number.

Therefore, the common difference of the A.P is 4.

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THE FIRST TERM OF A.P.IS 5,THE LAST TERMS IS 45 AND THE SUM OF TERMS IS 400.FIND THE NUMBERS OF TERMS AND THE COMMON DIFFERENCE OF A.P

Answer 2

Answer:

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