# Question #e1576

##### 2 Answers

#### Explanation:

The Exp.

Observe that, there are **Product.**

If we make their pairs, there will be

left ungrouped.

The pairs are constructed as under :

**Pair 1** :

**Pair 2** :

**Pair 9**:

Recall that the

has remained unpaired.

Finally, we note that,

Hence, from

**Enjoy Maths.!**

The Given Exp.

There are 19 terms and 10th term is the middle term which is

Now the product of 1st and 19th term

Similarly product of 2nd 18th term

Similarly it can be shown that the product of each of 9 pairs (as paired in the manner above) will be

Hence the given expression will have value

i.e.