Find real questions from previous competitive exam papers with answers and solutions.
Browse complete papersWhat will come in the place of the question mark ‘?’ in the following question?
4 × 22.5 ÷ 1.5 + ? – 6 = 30
20
-24
-15
25
18
Correct answer
-24
Why this answer is correct
Given expression :
4 × 22.5 ÷ 1.5 + ? – 6 = 30
⇒ 4 × 15 + ? – 6 = 30
⇒ 60 + ? - 6 = 30
∴ ? = 30 - 60 + 6 = -24
What should come in place of the question mark '?' in the following number series?
[(275 - 124) + 42 - 92 - 36)] + 14 = ?
64
36
52
32
None of these
Correct answer
64
Why this answer is correct
Concept used:
Follow BODMAS rule to solve this question, as per the order given below,
Calculation:
Now,
[(275 - 124) + 42 - 92 - 36)] + 14 = ?
⇒ [151 + 16 - 81 - 36] + 14 = ?
⇒ 50 + 14
⇒ 64 = ?
⇒ ? = 64
∴ The required value is 64
What will come in the place of the question mark ‘?’ in the following question?
75 - 3 × {(62 ÷ 6) ÷ 3} ÷ \(\frac{1}{3}\) + 13 =?
50
40
60
70
80
Correct answer
70
Why this answer is correct
Follow the BODMAS rule to solve this question, as per the order given below:
75
Step-1: Parts of an equation enclosed in 'Brackets' must be solved first, and in the bracket,
Step-2: Any mathematical 'Of' or 'Exponent' must be solved next,
Step-3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated,
Step-4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.
Now,
75 - 3 × {(62 ÷ 6) ÷ 3} ÷ \(\frac{1}{3}\) + 13 =?
⇒ 75 - 3 × {(62 × 1/6) ÷ 3} ÷ \(\frac{1}{3}\) + 13 = ?
⇒ 75 - 3 × {6 ÷ 3} ÷ \(\frac{1}{3}\) + 13 = ?
⇒ 75 - 3 × 2 × 3/1 + 13 = ?
⇒ 75 - 18 + 13 = ?
⇒ 88 - 18 = ?
⇒ ? = 70
∴ The required value in the place of the question mark (?) is 70
What will come in place of the question mark?
220 ÷ 5 ÷ 0.4 + 20 × 3 = ?
170
175
189
128
146
Correct answer
170
Why this answer is correct
Solution:
We have to follow the BODMAS rule
Calculation:
220 ÷ 5 ÷ 0.4 + 20 × 3 = ?
⇒ 44 ÷ 0.4 + 20 × 3 = ?
⇒110 + 20 × 3 = ?
⇒ 110 + 60 = ?
⇒ ? = 170
∴ 170 will come in place of question mark
What will come in the place of the question mark ‘?’ in the following question?
(42 × 6 × 6) ÷ 36 × 9 = 20% of ?
340
550
270
720
27
Correct answer
720
Why this answer is correct
Given:
(42 × 6 × 6) ÷ 36 × 9 = 20% of ?
Solution:
Follow the BODMAS rule according to the table given below:
Calculation:
(42 × 6 × 6) ÷ 36 × 9 = 20% of ?
⇒ (96 × 6) ÷ 36 × 9 = 20% of ?
⇒ 576 ÷ 36 × 9 = 20% of ?
⇒ 16 × 9 = 20% of ?
⇒ (144 × 100)/20 = ?
⇒ ? = 720
∴ 720 will come in place of the question mark
What will come in the place of the question mark ‘?’ in the following question?
\(13\frac{6}{7} + 8\frac{2}{5} - 1\frac{5}{7} \times 2\frac{1}{3} = ;?\)
\(2\frac{7}{{35}}\)
\(14\frac{7}{{35}}\)
\(12\frac{7}{{25}}\)
\(8\frac{9}{{35}}\)
\(18\frac{9}{{35}}\)
Correct answer
\(18\frac{9}{{35}}\)
Why this answer is correct
Concept used:
Follow BODMAS rule to solve this question, as per the order given below:
Calculation:
Considering the given equation
\(13\frac{6}{7} + 8\frac{2}{5} - 1\frac{5}{7} × 2\frac{1}{3} = ;?\)
We can transform each term within the given equation in the p/q form as follows: -
⇒ 97/7 + 42/5 - 12/7 × 7/3 = ?
⇒ 97/7 + 42/5 - 12/3 = ?
⇒ 97/7 + 42/5 - 4 = ?
⇒ 779/35 - 4 = ?
⇒ (779 - 140)/35 = ?
⇒ 639/35 = ?
⇒ ? = 639/35
⇒ ? = \(18\frac{9}{{35}}\)
∴ The required value of "?" in the given equation is \(18\frac{9}{{35}}\)
What should come in place of question mark (?) in the following questions?
[(121)2 ÷ 11 × 2] ÷ 44 × 2 – 57 = ?2
4
16
9
8
None of these
Correct answer
8
Why this answer is correct
Concept used:
Follow BODMAS rule to solve this question, as per the order given below:
Calculation:
Considering the given equation
[(121)2 ÷ 11 × 2] ÷ 44 × 2 – 57 = ?2
⇒ [14641 ÷ 11 × 2] ÷ 44 × 2 – 57 = ?2
⇒ [1331 × 2] ÷ 44 × 2 – 57 = ?2
⇒ [2662] ÷ 44 × 2 – 57 = ?2
⇒ 2662 ÷ 44 × 2 – 57 = ?2
⇒ 60.5 × 2 – 57 = ?
⇒ 121 – 57 = ?
⇒ 64 = ?2
⇒ 8 = ?
∴ ? = 8
What should come in place of question mark (?) in the following questions?
12167 ÷ 23 × 2 + 386 + ?2 = 2888
48
58
43
38
None of these
Correct answer
38
Why this answer is correct
Concept used:
Follow BODMAS rule to solve this question, as per the order given below:
Calculation:
Considering the given equation
12167 ÷ 23 × 2 + 386 + ?2 = 2888
⇒ 529 × 2 + 386 + ?2 = 2888
⇒ 1058 + 386 + ?2 = 2888
⇒ 1444 + ?2 = 2888
⇒ ?2 = 2888 – 1444
⇒ ?2 = 1444
⇒ ? = 38
∴ ? = 38
What will come in the place of the question mark ‘?’ in the following question?
∛6859 + √441 – ∛4096 – √576 = ?
1
48
0
-42
None of these.
Correct answer
0
Why this answer is correct
Concept used:
Follow BODMAS rule to solve this question, as per the order given below,
Calculations:
∛6859 + √441 – ∛4096 – √576 = ?
⇒ 19 + 21 – 16 – 24 = ?
⇒ 19 + 21 – 16 – 24 = ?
⇒ 40 – 40 = ?
⇒ ? = 0
∴ The value of ? is 0
Find the value of ‘?’ in the following question.
[122 + (142 – 40)] × 2.5 = ? × 25
25
35
15
30
None of these
Correct answer
30
Why this answer is correct
Concept used:
Follow BODMAS rule to solve the question as per the order given below:
Step 1: Part of an equation enclosed in ‘Brackets’ must be solved first and in the bracket.
Step 2: Any mathematical ‘of’ or ‘Exponent’ must be solved next.
Step 3: Next, the parts of the equation that contain ‘Division’ and ‘Multiplication’ are calculated.
Step 4: Last but not least, the part of the equation that contain ‘Addition’ and ‘Subtraction’ should be calculated.
Now,
Calculations:
Considering the given equation,
[122+ (142 – 40)] × 2.5 = ? × 25
⇒ [122 + (196 – 40)] × 2.5 = ? × 25
⇒ [122 + 156] × 2.5 = ? × 25
⇒ [144 + 156] × 2.5 = ? × 25
⇒ 300 × 2.5 = ? × 25
⇒ 750 = ? × 25
∴ ? = 30