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Question
Which of the following is equal to 1?
Options
20 + 30 + 40
20 × 30 × 40
(30 – 20) × 40
(30 – 20) × (30 + 20)
MCQ
Solution
20 × 30 × 40
Explanation:
For any non-zero integers ‘a’ and ‘b’ and whole numbers m and n,
a0 = 1
So, 20 = 1, 30 = 1, 40 = 1
Then, (1 × 1 × 1) = 1
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