The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?
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What least number must be added to 4131, so that the sum is completely divisible by 19?
What is the sum of the first 13 terms of an arithmetic progression if the 5th term is 1 and the 8th term is -17?
In what ratio is the segment joining (-1,-12) and (3,4) divided by the x-axis?
How many numbers less than 200 are multiples of both 5 and 6?
The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?
Which is the correct ascending order of the given numbers?
If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?