None of the interchange is applicable in the equation to produce number 201
If we interchanges signs '+' and '÷', then the equation changes into
15 + 9 x 3 - 74 ÷ 2 = 15 + 27 - 37 = 5
If we interchange of signs '+' and 'x', then the equation changes into
16 - 21 ÷ 7 + 6 x 3 = 16 - 3 + 18 = 31
If we interchanges signs '+' and '÷', then the equation changes into
5 x 15 + 7 - 20 ÷ 4 = 5 x 15 + 7 - 5 = 77
If we interchanges signs '÷' and 'x', then the equation changes into
4 ÷ 2 + 6 x 2 - 12 = 2 + 12 - 12 - 2
If we interchange 'x' and '-' , the equation changes into
3 x 9 - 27 + 9 ÷ 3 = 27 - 27 + 3 = 3
If we interchange the signs 'x' and '÷' the equation becomes
16 + 4 x 2 - 21 ÷ 7 = 16 + 8 - 3 = 21
If we interchange symbols '-' and '÷', the equation becomes
9 x 4 - (36 ÷ 9) + 1
= 9 x 4 - 36/9 + 1
= 36 - 4 + 1
= 33
On interchanging '-' to '+' and 2 to 6
4 x 2 + 6 = 14
? 8 + 6 = 14
? 14 = 14
On interchanging signs '+' to '÷' and 2 to 3
(2 + 4) ÷ 3 = 2
? 6 ÷ 3 = 2 ? 2 = 2
On interchanging signs 'x' to '-' and 2 to 3
(6 ÷ 3) - 2 = 0
? 2 - 2 = 0
? 0 = 0
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