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If '+' means '-', 'xx' means '-:' '-:' m...

If '+' means `'-', 'xx'` means `'-:' '-:'` means '+' and '-' means `'xx'`, then which of the following will be the value of expression:
`7xx3.5-:2-4+5`

A

a. 4

B

b. 5

C

c. 11

D

d. None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Using the proper notations in the given expression, we have
`= 7 xx 3.5 -: 2 - 4 + 5`
`= 7 -: 3.5 + 2 xx 4 - 5`
`= 2 + 2 xx 4 - 5`
`=2 + 8 -5`
`=10 - 5 =5`
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