exam Maths Puzzle Numerical Ability

find the GCF of 90x2,60x6,80x4

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exam Other Question

Q. A plane flying with a tailwind flew 300 mi in 2 h. against the wind, it took 3h to travel the same distance. Find the rate of the plane in calm air and the rate of the wind.
- Think of any fundamental operation on
a) Irrational number, which results in:
A rational number.
An irrational number.

b) A complex number (a + bi, where a and b ar