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
Using the correct symbols, we have
1 8 R 9 P 2 Q 8
= 18 ÷ 9 + 2 x 8
= 2 + 2 x 8 = 2 + 16 = 18
Using the proper symbols, we have
24 ÷ 12 - 8 + 9
Now Apply the BODMAS Rule,
= 24 x 12 + 18 ÷ 9
= 288 + 2 = 290
Change the proper sign according to question and try all option one by one by applying the BODMAS Rule.
'-' ? ÷
'+' ? '-'
÷ ? 'x'
'x' ? '+'
? 70 ÷ 2 - 4 x 5 + 6 = 21
? 35 - 20 + 6 = 21
? 15 + 6 = 21
? 21 = 21
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
15 + 9 x 3 - 74 ÷ 2 = 15 + 27 - 37 = 5
None of the interchange is applicable in the equation to produce number 201
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
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