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If 37 X 3 is a four-digit natural number divisible by 7, then the place marked as X must have the value :
Answer & Solution
Correct Answer:
Option
A
37 × 3 is divisible by 7
⇒ (7 × 3 - 3) is either 0 or divisible by 7
⇒ 7 × 0 is divisible by 7
⇒ X = 0 or X = 7
⇒ (7 × 3 - 3) is either 0 or divisible by 7
⇒ 7 × 0 is divisible by 7
⇒ X = 0 or X = 7
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