Question
Which country unveiled the world's first automated and
driverless train?Solution
German rail operator Deutsche Bahn and industrial group Siemens unveiled the world's first automated, driverless train in the city of Hamburg. Hamburg train will be sharing tracks with other regular trains.
If x ≠ 0 and x − 1/x = 5, find:
(i) x² + 1/x²
(ii) x³ − 1/x³
Find the largest 5-digit number that is divisible by 12, 15, 18, and 24. Also, what is the remainder when this number is divided by 11?
If z + (1/z) = 2 then find z105 + 1/(z105) = ?
√(92×8 ×52+700) = ?
If x = 21, then the value of x5 - 22x4 + 22x3 - 22x2 + 22x - 1 is
= ? Solve: 5 – 3x > 2x + 10
- If (x 2 = 8x - 16), then find the value of [x³ + (x⁴/16)][4 - x³]
If (a2 + 1/a2 ) = 66, then find the value of (a3 – 1/a3 ).
If a2+2 = 2a
then find a4 - a3 + 2a2 -2a+ 9 = ?