66X67=4422

But as per vedic math answer is 4242.

Dear meritnation experts,please correct it.

66*67=44/₈2/₄2

this is real vedic mathematics

 my dear it is clearly written that "sum of the digits at once place must be 10"

yaa!! its clearly mentioned dere "sum of d dgits at 1ce place mst b 10"

the rule is that the digits in the ones place should have a total of 10

and the first two nos shoud be the same

so this works in 63*67

trcik is working for no. whose units digit sum is 10

 trcik is working for no. whose units digit sum is 10

Take a look at your question again 

 66x67

It will work if the no. would have been 66x64

cause 

6+7=13>10

6+4=10=10