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    When $m+n$ is divided by $12,$ it leaves the remainder $8$ and when $m-n$ is divided by $12$ it leaves the remainder $6.$ What is the remainder when m×n is divided by $6\ ?$
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    A card out of a deck of 52 cards is lost. After that two cards are taken out at random and are found to be spades. What is the probability that lost card is a spade?
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    What is the LCM of $x^3+1,~~x^2-1,~~x^3-1$
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    If we consider the permutation of 7 numbers then what is the order of 1457236?
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    if $ab+a+b=250,~~$ $ac+a+c=300,~~$ $bc+b+c=216,~~$ find the value of $a+b+c$
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    Using the digit 2, 4 and 6, two digit number is formed, each digit being used only once. Find the probability that the number so formed is greater than 46.
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    An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with $x$ kmph and coming back at $2x$. Take total time of bird traveling as 187.5 s. Find $x$ and $2x$
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    Three men start together to travel the same way around a circular track of $11$ km. Their speeds are $4,5.5$ and $8$ km/hr respectively. When will they meet at the starting point for the first time?
    a) After $11$ hours
    b) After $21$ hours
    c) After $22$ hours
    d) After $33$ hours
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