using the numbers 3,5, 7, only once how do you get the answer 61 ?

To get the answer 61 using the numbers 3, 5, and 7 only once, you need to perform some mathematical operations. Here's one way to do it:

1. Start with the number 7.
2. Multiply 7 by 5, which gives you 35.
3. Add 3 to 35, which gives you 38.
4. Multiply 38 by 3, which gives you 114.
5. Finally, subtract 53 (53 is the sum of the three given numbers: 3 + 5 + 7).

Therefore, 114 - 53 = 61.

By following this sequence of operations, using multiplication, addition, and subtraction, you can obtain the answer 61 using the numbers 3, 5, and 7 only once.