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- Question
- Which sequence of mathematical symbols can replace *in the given equation to balance the equation?
7 * 7 * 2 * 1 = 12
Options- A. x - ÷
- B. + - x
- C. x - +
- D. + x -
- Correct Answer
- + - x
ExplanationGiven, 7 * 7 * 2 * 1 = 12
Let us check all the options one by one.
From option (a), putting the signs in given equation, we get
7 x 7 - 2 ÷ 1 = 12 ? 7 x 7 - 2 = 12
? 49 - 2 = 12 ? 47 = 12
? LHS ? RHS
So, option (a) is incorrect.
From option (b), putting the signs in given equation, we get
7 + 7 - 2 x 1 = 12 ? 7 + 7 - 2 = 12
? 14 - 2 = 12 ? 12 = 12
Hence, option (b) is correct and there is no need to check remaining options . - 1. 65 40 11 = 36
Options- A. - and +
- B. x and ÷
- C. ÷ and +
- D. + and x Discuss
- 2. 6 5 4 = 34
Options- A. - and +
- B. x and +
- C. ÷ and x
- D. x and - Discuss
- 3. If '@' means 'x', 'c' means '÷' % means (+) and '$' means '-', then 6%12C3@8 $ 3 =?
Options- A. 37
- B. 35
- C. 39
- D. 33 Discuss
- 4. If S means '-', Q means 'x' , R means '÷' and P means '+' then
1 P 45 R 2 Q 2 S 4 =?
Options- A. 40
- B. 42
- C. 36
- D. 46 Discuss
- 5. 4 - 4 = 17, 6 - 6 = 37, 2 - 2 = 5, 5 - 5 =?
Options- A. 27
- B. 26
- C. 20
- D. 24 Discuss
- 6. If 73 + 82 = 14, 91 + 21 = 11, then 86 + 24 =?
Options- A. 9
- B. 62
- C. 8
- D. 6 Discuss
- 7. In the following question, * stands for any of the mathematical signs at different places, which are given as choices under each question. Select the choice with the correct sequence of signs which when substituted makes the question as a correct equation.
24 * 4 * 5 * 4
Options- A. x + =
- B. = x +
- C. + x =
- D. = + x Discuss
- 8. Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
16 * 6 * 4 * 24
Options- A. ÷ = x
- B. x = ÷
- C. = ÷ ÷
- D. x ÷ = Discuss
- 9. Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
9 * 3 * 3 * 3 * 6
Options- A. ÷ x - =
- B. + - x =
- C. - + + =
- D. x + - = Discuss
- 10. Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
8 * 6 * 96 * 2 = 0
Options- A. x ÷ -
- B. x - ÷
- C. - x ÷
- D. ÷ - x Discuss
Mathematical Operations problems
Search Results
Correct Answer: - and +
Explanation:
Let us check all the options one by one.
From option (a),
65 - 40 + 11 = 36 ? 76 - 40 = 36
? 36 = 36 ? LHS = RHS
So, option (a) is correct and hence there is no need to check remaining options.
Correct Answer: x and +
Explanation:
Let us check all the options one by one.
From option (a),
6 - 5 + 4 = 34 (using VBODMAS rule)
? 10 - 5 = 34 ? 5 = 34
? LHS ? RHS
So, option (a) is incorrect
From option (b),
6 x 5 + 4 = 34 (using VBODMAS rule)
? 30 + 4 = 34 ? 34 = 34
? LHS = RHS
So, option (b) gives us the correct answer and hence, there is no need to check remaining options.
Correct Answer: 35
Explanation:
? 6%12C3@8 $ 3 = ?
After replacing the sign according to the question
? 6 + 12 ÷ 3 x 8 - 3 = ?
Apply the BODMAS Rule
? 6 + 4 x 8 - 3 = ?
? 6 + 32 - 3 = ?
? 38 - 3 = ?
? ? = 35
Correct Answer: 42
Explanation:
After replacing the sign according to question
1 P 45 R 2 Q 2 S 4
Apply the BODMAS Rule
= 1 + 45 ÷ 2 x 2 - 4
= 1 + 22.5 x 2 - 4
= 1 + 45 - 4 = 42
Correct Answer: 26
Explanation:
As, 4 - 4 ? 4 x 4 + 1 = 17
6 - 6 ? 6 x 6 + 1 = 37
2 - 2 ? 2 x 2 + 1 = 5
Similarly, 5 - 5 ? 5 x 5 + 1 = 26
? ? = 26
Correct Answer: 8
Explanation:
As, 73 + 82 = 14
? (7 - 3) + (8 + 2) = 14
? 4 + 10 = 14
? 14 = 14 and 91 + 21 = 11
? (9 - 1) + (2 + 1) = 11
? 8 + 3 = 11 ? 11 = 11
Similarly, 86 + 24 = (8 - 6) + (2 + 4) = 2 + 6 = 8
Correct Answer: = x +
Explanation:
From option (b),
24 = 4 x 5 + 4
? 24 = 20 + 4 ? 24 = 24
Correct Answer: x ÷ =
Explanation:
Apply all option one by one
? 16 x 6 ÷ 4 = 24
? 96/4 = 24 ? 24 = 24
Correct Answer: ÷ x - =
Explanation:
? 9 ÷ 3 x 3 - 3 = 6 ? 3 x 3 - 3 = 6
? 9 - 3 = 6 ? 6 = 6
Correct Answer: x - ÷
Explanation:
? 8 * 6 * 96 * 2 = 0
? 8 x 6 - 96 ÷ 2 = 0
? 48 - 48 = 0
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