Let's decode the operations according to the given rules:
'+' means '-'
'-' means '+'
'×' means '÷'
'÷' means '×'
(a) 30 + 5 ÷ 4 - 10 × 5 =22
30 - 5 × 4 + 10 ÷ 5 = 30 - 20 + 2 = 10+2 = 12
(b) 30 - 5 + 4 ÷ 10 × 5 =62
30 + 5 - 4 × 10 ÷ 5 = 30 + 5 - 8 = 23
(c) 30 + 5 - 4 ÷ 10 × 5 = 58
30 - 5 + 4 × 10 + 5 = 30 - 5 + 40 + 5 = 70
(d) 30 × 5 - 4 ÷ 10 + 5 = 41
30 ÷ 5 + 4 × 10 - 5 = 6 + 40 - 5 = 41
Option (d) is correct.
English
100 Questions
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90 Mins English English100 Questions100 Marks90 Mins English English40 Questions30 Marks25 Mins EnglishIf the two signs '+' and '÷' are interchanged, which of the following equations will be correct?
Select correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
56*7*2*4*12*8
If '×' means 'subtraction', '+' means 'division', '-' means 'addition' and '+' means 'multiplication', what will be the value of the following expression?
30 + [{(12 - 13) × (5 ÷ 2)} + (18 × 13)]
If ‘+’ means ‘subtraction’, ‘−’ means ‘multiplication’, ‘×’ means ‘division’ and ‘÷’ means ‘addition’, then what will come in place of the question mark (?) in the following equation?
64 × 8 + 6 − 6 ÷ 33 = ?
If + means −, − means ×, × means ÷ and ÷ means +, then what will come in place of the question mark (?) in the following equation?
75 × 5 + 11 − 2 ÷ 18 = ?
If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’, then what will come in place of the question mark (?) in the following equation?
9 B 5 D 12 A 2 C 11 = ?
If 'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '–', then what will come in place of the question mark (?) in the following equation?
100 A 5 C 14 D 5 B 3 = ?
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘×’ are interchanged, and ‘−’ and ‘÷’ are interchanged?
42 − 7 × 12 + 3 ÷ 13 = ?
What will come in the place of the question mark (?) in the following equation, if ‘÷’ and ‘−’ are interchanged and ‘×’ and ‘+’ are interchanged?
15 + 7 ÷ 7 × 48 − 2 + 23 × 4 = ?
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