Question

Fill in the boxes ?/66=70/?=28/44=?/121=7/?

Answer 1

Answer:

There was no need to check the number of combinations, you could simply have known that not a single combination of these numbers exists that gives the sum to be 30.

Want to know how?

You can see that all the numbers mentioned in the given set are odd, and the arithmetic sum of three odd numbers will always give an odd number.

So it isn't possible.

Now, some brilliant minds may tell you a different answer. They will use a different approach, like using decimals, or some other mathematical functions. But I will say that to use these techniques, the question need to be more specified i.e. whether we can use these functions or not.

Otherwise, this wasn't the right way to ask a question.

It's like asking “How far to Delhi?”.

But, from where?