Question

If sum of four numbers in A.P is 28 and product of

two middle terms is 45, then product of the first

and last terms is

(a) 11 (b) 13 (c) 15 (d) 17​

Answer 1

Answer:

B). 13.

Explanation:

Because

Sum of 4 terms is =28.

Product of middle terms =45.

Then the AP is 1,5,9,13.

1+5+9+13=28.

5×9=45.

So the product of 1st and 4th term is

1×13 =13.

I hope it will help you

IF it is right then mark as brainliest.. ☺️

Answer 2

If sum of four numbers in A.P. is 28 and product of two middle terms is 45, then product of the first and last terms is 13.