Question 1 (x)
Without actually performing the long division, state whether77210 will have a terminating decimal expansion or a non-terminating repeating decimal expansion.
77210
Simplify it by dividing numerator and denominator by 7 to get 1130.
On factorising the denominator, we get;
30=2×3×5
The denominator is not in the form of 2m×5n.
Hence, the decimal expansion of 77210 is non terminating.