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Mathematical reasoning questions and answers based on BODMAS rules, simplification, brackets ( ( ), { }, [ ] ), matrices, sequence of numbers as well as division, multiplication, addition and subtraction under Mathematical Reasoning. Useful for all competitive exams like UPSC, IAS, PSC, SSC, Railway, Bank, All State Exam, and Defense Exam, you can get success in all exams by studying these questions.
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Q : By interchanging the given two signs and numbers which of the following equation will be not correct?
÷ and ×, 1 and 3
(A) 6 ÷ 3 – 1 + 4 × 2 = 5
(B) 4 × 3 – 1 + 8 ÷ 2 = 9
(C) 5 – 8 × 3 + 9 ÷ 1 = 24
(D) 6 + 4 – 9 × 3 ÷ 1 = –17
After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
– and ×, 6 and 4
I. 7 × 6 + 8 ÷ 2 – 4
II. 4 – 7 × 6 + 8 ÷ 2
(A) 27, 42
(B) 27, 47
(C) 27, 49
(D) 25, 40
By interchanging the given two signs and numbers which of the following equation will be not correct?
× and ÷, 2 and 6
I. 7 – 4 × 3 ÷ 6 + 2 = 8
II. 6 – 8 × 2 + 9 ÷ 3 = 5
(A) Only II
(B) Neither I nor II
(C) Only I
(D) Both I and II
By interchanging the given two signs which of the following equation will be correct?
× and +
(A) 7 × 8 ÷ 9 + 18 – 11 = 16
(B) 24 – 8 – 5 × 5 + 3 = 14
(C) 5 × 10 – 15 + 20 ÷ 25 = 8
(D) 24 × 8 + 6 ÷ 3 – 18 = 22
Which two numbers from amongst the given options should be interchanged to make the given equation correct?
248 ÷ 4 + 184 ÷ ( 4 × 6 – 2 × 8) = 77
(A) 8 and 4
(B) 184 and 77
(C) 184 and 248
(D) 4 and 6
After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
× and ÷, 7 and 9
I. 8 × 3 ÷ 6 + 9 – 7
II. 9 – 7 × 1 + 6 ÷ 3
(A) 0, 8
(B) 14, 16
(C) 6, 9
(D) 10, 11
If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
45 × 9 ÷ 12 – 5 + 3
(A) 34
(B) 27
(C) 36
(D) 62
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
33 * 4 * 15 * 3 * 61 = 188
(A) + × ÷ −
(B) × − ÷ +
(C) + − ÷ ×
(D) ÷ × − +
By Interchanging the given two numbers which of the following equation will be not correct?
3 and 4
(A) 3 + 5 × 4 – 6 ÷ 2 = 16
(B) 4 × 6 – 3 + 9 ÷ 1 = 25
(C) 3 × 7 – 8 ÷ 2 + 4 = 27
(D) 9 × 3 ÷ 6 + 4 – 8 = 1
If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
3 ÷ 6 + 3 – 4 × 4 = ?
(A) 8
(B) 5
(C) 6
(D) 4
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