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If 
= 4 then
If x – 1/x = 9, then x3 – 1/x3 is:
If AB = x + 3, BC = 2x and AC = 4x − 5, then for what value of ‘x’ does B lie on AC?
If a = 2 + √3, then the value of (a6 + a4 + a2 + 1)/a3 is
48 24 24 48 ? 1536
...If 15a2 + 1 = 20a, then find the value of {(9a2 + 1)/25a2}
If (x² + 1)/x = 3, what is the value of (x¹² + 1)/x ⁶ ?
If x/y = 5/3, Find (x+y)/(x-y)?
A man running at the speed of 6 kmph was over taken by the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.
