@ (A,B) = average of A and B
*(A,B) = product of A and B
/(A,B) = A divided by
Which expression gives the sum of A, B, and C?
To solve the problem, we need to understand the given expressions:
We need to find the expression that gives the sum of A, B, and C, which is A + B + C. Let's analyze each option step by step:
Breaking it down:
Clearly, this is incorrect as we need to have A + B + C, not (A + B + C) * 1.5.
Breaking it down:
This expression does not result in A + B + C.
Breaking it down:
This also does not match A + B + C.
The expression evaluated above correctly is given in:
The correct expression for the sum A + B + C is None of these.
For any natural number $k$, let $a_k = 3^k$. The smallest natural number $m$ for which \[ (a_1)^1 \times (a_2)^2 \times \dots \times (a_{20})^{20} \;<\; a_{21} \times a_{22} \times \dots \times a_{20+m} \] is: