Question

4 2 7 1 4 =18 starting on the left,use each symbol once to get to the answer + - × ÷ ​

Answer 1

The correct answer is :-

4-2x7/1+4

=18

Answer 2

$Given \: digits \: 4,2 , 7, 1 \:and \: 4$

$Using \: the \: symbols \: +,-,×,÷$

$(4 - 2) \times 7\div 1+4\\= 2 \times 7 + 4 \\= 14+ 4 \\= 18$

Therefore.,

$\red {(4 - 2 )\times 7\div1 + 4}\green { = 18 }$

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