Question

Using the identity evaluate 8.56×11.60

Answer 1

to get the no which is common to both, u have to just simply add both the no (i.e, 8.56 and 11.60) and divide it by 2
then you will get the no no which is the average or is the middle of both numbers. like in above mentioned question 10.08 is the number which is in the middle of both the numbers i.e 8.56 and 11.60