Question
Six friends D, E, F, G, H, and I are sitting in a row
facing north. H sits second to the left of G, who sits second to the left of I. More than three friends sit between H and F. D doesn’t sit next to I. Who sits third to the right of D?Solution
H sits second to the left of G, who sits second to the left of I. H ____ G ____ I More than three friends sit between H and F. D doesn’t sit next to I. H D G ____ I F Final arrangement: H        D        G        E        I          F
If x² + x = 11
find (x+4)³ +1/((x+4)³)

- 12% of 25% of ‘A’ is equal to 40% of 15% of ‘B’. Find the value of (A + B):(A – B).
If for non-zero x, x² - 4x - 1 = 0, what is the value of x² + 1/x²?
If 112 ÷28 x 22 –12 x 6 ÷ 3 +12 = z, then find the value of z.
- If 2x + 4y - 9 = 0, then find the value of 8x 3 Â - 723 + 64y 3 Â + 216xy.
3x +3y =10 and 3x+y =5 then find the value of 3x-y +3y-x.
A dishonest dealer claims to sell goods at cost price but uses a false weight of 900g instead of 1kg. What is his profit percentage?
  = ?If (a2 + 1/a2) = 51, then find the value of (a3 - 1/a3).