Aiming for the 24

6 1 3 4 = ??

Using four basic math signs (+, -, *, /) and brackets, for instance:

6 * (1 + 3) - 4 = 20

6 * 1 * 3 + 4 = 22

6 + 13 + 4 = 23

(6 + 1)* 3 + 4 = 25

61 - 34 = 27

Try to achieve 24.

• This question is not made by me, I heard it from a fellow train traveller years ago, so it might be a repeat. Also: No Computers You Tricky Person! – Thomas Blue Jul 27 '18 at 10:08
• Just noticed that $61-34=43-16$... odd coincidence? – Mr Pie Jul 27 '18 at 10:08
• Can we shuffle the digits? – LinuxBlanket Jul 27 '18 at 10:13
• @Oray Neither the question, nor the idea of the answer corresponds that of the 2-0-1-8 question. – Thomas Blue Jul 27 '18 at 11:00
• Possible duplicate of Make 10 out of 1, 1, 5 and 8 – it's my bonus puzzle there. – Glorfindel Jul 27 '18 at 11:34

$24 = \frac{6}{1 - \frac{3}{4}}$
• You got it before me. $(+1)$ :) – Mr Pie Jul 27 '18 at 10:30