General Mental Ability Arithmetical Reasoning
General Mental Ability Arithmetical Reasoning
General Mental Ability Arithmetical Reasoning
com
General Mental
Ability
Topic
Arithmetical Reasoning
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Arithmetical Reasoning
First we should know some mathematical operations. They are add (+), subtraction
(), multiply () and division (), greater than (>), less than (<). This test is set up to
test candidates skill in mathematical operations. The questions involving these
operations are set using artificial symbols. You are required to substitute the real
signs and solve the questions accordingly, to get the answer.
Problem-Solving by Substitution
In such type of questions you have some substitutes for various mathematical
symbols or numerals followed by a question involving calculation of an expression
or choosing the correct/incorrect equation.
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Rule BODMAS
Brackets
Of
Division
Multiplication
Addition
Subtraction
While solving a mathematical operations proceed according to the
BODMAS formula.
Example 1: If + means minus means divided by means plus and
means multiplied by then which of the following will be the value of
expression 7 3.5 2 4 + 5 ?
(a)
4
(b)
5
(c)
11
(d)
None of these
Solution.
(b) Using the proper notations in the given expression, we have
= 7 3.5 2 4 + 5 = 7 + 3.5 + 2 4 5
= 2 + 2 4 5 = 2 + 8 5 = 10 5 = 5
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Example 5: Which one of the four interchanges in signs and number would
make the given equation correct?
64+2
= 16
(a)
+ and , 2 and 4 (b)
+ and , 4 and 6
(c)
+ and , 2 and 6 (d)
None of the above
Solution.
(b)
On interchanging signs + and and 4 and 6,
4+62
= 4 +12 = 16
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