Start learning →

Which of the following numbers is prime?

A61
B63
C51
D57
Answer & Solution
Correct answer: A. 61
61 has no divisors other than 1 and itself. 51 = 3·17, 57 = 3·19, 63 = 7·9. So 61 is the prime.
Practise this question with Quill — Andhra Pradesh SSC (Class 10) →

Keep practising Real Numbers and Polynomials

Browse all Real Numbers and Polynomials questions for Andhra Pradesh SSC (Class 10), or explore more Mathematics topics.

Start a Real Numbers and Polynomials lesson →
Related questions
CLASS10 · Mathematics · Polynomial Zeros & CoefficientsCLASS10 · Mathematics · HCF & LCM PairsAP nth term formula.Pythagorean theorem.Sort each number as Prime or Composite.Match each trig ratio to its definition in a right triangle.Pop only the irrational numbers.Continue the arithmetic progression.