MATHS MCQS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
7879553
7879593
8478551
None of these
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Explanation
A number is divisible by 11 if the difference between the sum of its digits in odd positions and the sum of its digits in even positions is a multiple of 11 (including 0).
For 7879553 :
Sum of odd-positioned digits = 7 + 7 + 5 + 3 = 22 Sum of even-positioned digits = 8 + 9 + 5 = 22 Difference = 22 - 22 = 0 (which is a multiple of 11)
Thus, 7879553 is divisible by 11 .
Vinculum, braces, parenthesis and square bracket.
Vinculum, parenthesis, braces and square bracket.
Parenthesis, vinculum, braces and bracket.
None of these
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Explanation
Vinculum (−) : A horizontal line used in fractions or bar notation. Parentheses ( ) : First to be solved inside expressions. Braces { } : Used for grouping after parentheses.
Square Brackets [ ] : Solved last in nested expressions.
5.5
11.5
9.5
None of these
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Explanation
0.5x + 5 = x - 0.75
Solving for x:
Move 0.5x to the right side:5 = x - 0.75 - 0.5x Simplify:5 + 0.75 = x - 0.5x 5.75 = 0.5x Divide by 0.5 : x = 11.5
64
-64
-32
None of these
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Explanation
(-2)² = 4 (since squaring a negative number makes it positive).[4]² = 16 (squaring again).
Final result: 16² = 64 .
9/11
9/8
8/9
None of these
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Explanation
Let x = 0.888... (repeating).
Multiply by 10: 10x = 8.888...
Subtract: 10x - x = 8.888... - 0.888...
→ 9x = 8
Solve for x: x = 8/9.
10
8
12
None of these
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Explanation
The formula for the number of quantities is:Number of quantities = Sum / Average 5200 ÷ 650 = 8 .
11
15
13
None of these
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Explanation
√2197 = 13 , since 13 × 13 × 13 = 2197 .
It is the cube root of 2197 , making 13 the correct square root as well .
8
6
7
None of these
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Explanation
5 masons can build a house in 120 days.
This means the total work required to build the house is:
5 masons × 120 days = 600 mason-days
To build the same house in 75 days, the total work required remains the same (600 mason-days).
Let's divide the total work by the new timeframe:
600 mason-days ÷ 75 days = 8 masons
38.44
31.44
34.44
None of these
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Explanation
To find 62% of 62 , multiply: (62 × 62) ÷ 100 = 38.44
Prime factor
Product
Quotient
None of these
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Explanation
The Least Common Multiple (LCM) of two or more prime numbers is always their product because prime numbers have no common factors other than 1. For example , LCM of 3 and 5 (both prime) is 3 × 5 = 15.
