alleryStart learning →Which pair of numbers are each their own reciprocal?
A0 and 1
B2 and −2
C1 and −1
D1/2 and 2
Answer & Solution
Correct answer: C. 1 and −1
1 × 1 = 1 and (−1) × (−1) = 1, so both equal their own reciprocal.
Keep practising Rational numbers
Browse all Rational numbers questions for Olympiad (Class 7), or explore more Mathematics topics.
Related questions
Which of 5/9, 4/7, 7/12 and 3/5 is the smallest?Simplify (−18/42) + (12/−28) to lowest terms.By what rational should 7/9 be divided to get −14/27?A number increased by 1/4 of itself becomes 15/2. What is the number?Which positive rational x makes x + 1/x equal to 5/2?Two rationals have sum 5/6 and difference 1/6. What is the larger one?Find 1/(1×2) + 1/(2×3) + 1/(3×4).What number is −(−3/5), the negation of −3/5?