Question

3, x, 7, are in AP what is the value of x

(a) 5 (b) 13 (c) 10 (d) None of these​

Answer 1

ANSWER IS 5.

Check out the answer in the attachment.

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Answer 2

Question:-

• If 3, x, 7 are in AP.
• Then, find the value of x

Solution:-

Given,

3, x, 7 are in AP

According to the property of AP

$t_{2} - t_{1} = t_{3} - t_{2}$

So,

$x - 3 = 7 - x$

$x + x = 7 + 3$

$2x = 10$

$x = \frac{10}{2}$

$x = 5$

The Value of x is 5