What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
21 − 7 ÷ 144 × 3 + 18 = ?
Given - 21 − 7 ÷ 144 × 3 + 18
Now apply the interchanges:
‘−’ becomes ‘+’
‘÷’ becomes ‘×’
‘×’ becomes ‘÷’
‘+’ becomes ‘−’
So the modified equation becomes:
21 + 7 × 144 ÷ 3 − 18
Step 2: Apply BODMAS (operator precedence)
Expression:
21 + 7 × 144 ÷ 3 − 18
First, do multiplication and division from left to right:
7 × 144 = 1008
1008 ÷ 3 = 336
Now the expression becomes:
21 + 336 − 18
Now do addition and subtraction:
21 + 336 = 357
357 − 18 = 339
Final Answer: D) 339
English
80 Questions
160 Marks
60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins EnglishIf ‘+’ 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 place of the question mark (?) in the following equation, if ‘+’ and ‘÷’ are interchanged and ‘−’ and ‘×’ are interchanged?
15 − 3 ÷ 21 + 3 × 36 = ?
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘÷’ are interchanged and ‘−’ and ‘×’ are interchanged?
26 + 2 × 12 − 2 ÷ 16 = ?
If + means -, - means ×, × means ÷ and ÷ means +, then what will come in place of the question mark (?) in the following equation?
64 + 18 × 6 ÷ 5 - 3 = ?
If + means −, − means ×, × means ÷, and ÷ means +, what will come in place of the question mark (?) in the following equation?
20 – 4 ÷ 7 + 12 × 4 = ?
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