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Question
If 20 - 10 means 200, 8 ÷ 4 means 12, 6 x 2 means 4, then 100 -10 x 1000 ÷ 1000 + 100 x 10 = ?
Options
0
20
1090
1900
MCQ
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Solution
1090
Explanation:
As 20 - 10 means 200
⇒ 20 x 10 = 200
∴ '-' means 'x'
8 ÷ 4 means 12
⇒ 8 + 4 =12
∴ '÷' means '+'
and 6 x 2 means 4 ⇒ 6 - 2 = 4
∴ 'x' means '-'
Now, 100 - 10 x 1000 ÷ 1000 + 100 x 10
After replacing the signs, we get
100 x 10 - 1000 + 1000 + 100 - 10
⇒ 1000 - 1000 + 1000 + 100 - 10
1100 - 10 = 1090
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Mathematical Operations (Entrance Exam)
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