SSC CHSL Similar 21 Nov S1 – Q051

Question:

Which of these fractions results in a terminating decimal?

इनमें से कौन सा भिन्न एक सांत दशमलव (terminating decimal) में परिणामित होता है?

Options:

  • 5/9
  • 3/16
  • 7/12
  • 11/15
  • 5/9
  • 3/16
  • 7/12
  • 11/15

Correct Answer: b)

Explanation:

A fraction in simplest form results in a terminating decimal if and only if the prime factorization of the denominator contains only 2 and/or 5.
In \(3/16\), the denominator is \(16 = 2^4\). Since it has only 2 as a prime factor, \(3/16 = 0.1875\) is a terminating decimal.

किसी भिन्न का दशमलव प्रसार सांत तभी होता है जब उसके हर का अभाज्य गुणनखंड केवल 2 और/या 5 के रूप में हो। \(3/16\) में हर \(16 = 2^4\) है, अतः \(3/16 = 0.1875\) एक सांत दशमलव है।

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