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Mathematical Operations

Important Instructions
81.

Given intercharges : 

Signs + and x and numbers 4 and 5.

Answer: C

On interchanging + and x and 4 and 5 in (c),

we get the equation as 
4 + 5 x 20 = 104 or 104 = 104, which is true.

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82.

If ‘+’ means ‘divided by’, ‘–‘ means ‘added to’, ‘×’ means ‘subtracted from’ and ‘÷’ means ‘multiplied by’, then what is the value of 15 ÷ 12 – 36 + 3 ?

Answer: C

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83.

If "+" denotes "divided by", "x" denotes "added to", "÷" denotes "subtracted from" and "–" denotes "multiplied by", then
54 + 162 – 18 x 12 ÷ 6 = ?

Answer: C

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84.

If P means ‘division; T means ‘addition; M means ‘subtraction’ and D means ‘multiplication’, then what will be the value of the expression 12 M 12 D 28 P 7 T 15?

Answer: D

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85.

If + means +, – means x, + means + and x means then 36 x 12 + 4 + 6 + 2 – 3 = ?

Answer: C

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86.

If x stands for + stands for +, + stands for + and – stands for x, which one of the following equations is correct? 

Answer: B

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