Answer:
Step-by-step explanation:
It is very unlikely that the children will be able to digest lactose.
Because 3/6 is equal to 1/2.
You multiply the 1 (in 1/2) by 3, and the 2 (in 1/2) by 3 to get 3/6. You need to have a common denominator, and 6 was the common denominator.
The formula of combination is

We have

and


Hence, there are 1001 ways of arranging 10 records from 14 records