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If (666 ... n digits)2 + (888 .... n digits) = Y, where n > 1, then find the hundred’s digit in Y a)2 b)4 c)3 d)0 |

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It has to be 2. |

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ans is 4 |

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6666....n times ^2 + 8888....n times =36(1111....n times)^2 + 8888....n times 36(....4321) + 88888....n times (....556)+8888.....n times so ans is 4 |