Previous Year Questions

Option a:

21*3*36*2*23=68

After interchanging of sign:

21÷3-36x2+23=68

Using BODMAS

7-36x2+23=68

7-72+23=68

-42 is not equal to 68.

Option b:

21*3*36*2*23=68

After interchanging of sign:

21÷3x36+2-23=68

Using BODMAS

7x36+2-23=68

252+2-23=68

254-23=68

231 is not equal to 68.

Option c:

21*3*36*2*23=68

After interchanging of sign:

21+3x36-2÷23=68

Using BODMAS

21+108-2÷23=68

129-2÷23=68

So, this is not equal to 68.

Option d:

21*3*36*2*23=68

After interchanging of sign:

21x3-36÷2+23=68

Using BODMAS

63-18+23=68

86-18=68

68 is equal to 68.