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प्रश्न
1y3y6 is divisible by 11. Find the value of y.
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उत्तर
It is given that, 1y3y6 is divisible by 11.
Then, we have (1 + 3 + 6) – (y + y) = 0, 11, 22,...
⇒ 10 – 2y = 0, 11, 22,...
⇒ 10 – 2y = 0 ...[Other values give a negative number]
⇒ 2y = 10
⇒ y = 5
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