Define a rational number and an irrational number, giving one example of each.
Rational and Irrational Numbers
Original Khojo Papers practice question — not from a past board paper.
√5 + 2
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Multiply the numerator and the denominator by the conjugate √5 + 2. The denominator becomes (√5)2 − 22 = 5 − 4 = 1, so the expression equals √5 + 2.
From the same topic and chapter, at a similar level.
Define a rational number and an irrational number, giving one example of each.
Rational and Irrational Numbers
Simplify √50 + √18 − √8.
Rational and Irrational Numbers
Which of the following is an irrational number?
Rational and Irrational Numbers
Express the recurring decimal 0.333... as a fraction in its lowest terms.
Rational and Irrational Numbers
Rationalise the denominator of 1/(√5 + √3).
Rational and Irrational Numbers
Rationalise the denominator of 1/(√3 − 1).
Rational and Irrational Numbers