Mathematics for IGCSE & O level - Number (Section 1 - No. 10)
Which of the following are rational numbers?
22/7
π
0. 123
√9
Giải thích
Rational numbers can be expressed as fractions p/q, where p and q are integers, and q ≠ 0. 22/7, 0.123, and √9 (which equals 3) can be expressed as such.