Question discussion

Direction: Whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer:

0

Q. What is the value of three digits number, the unit digit of which is 3 and divisible by 7?
Statement I: The three digits number is divisible by 9.
Statement II: The three-digit number is divisible by 21.

  • (A). The data in statements I alone is sufficient to answer the question,
    while the data in statement II alone is not sufficient to answer the question.
  • (B). The data in statements II alone is sufficient to answer the question,
    while the data in statement I alone is not sufficient to answer the question.
  • (C). The data in both the statements I and II is not sufficient to answer the question.
  • (D). The data in both the statements I and II together is necessary to answer the question.
Option (A) is Correct

From the question, the unit digit of the three-digit number is 3, and it is divisible by 7.
From the statement I, the number is divisible by 9
LCM of 9 and 7 = 63
The only number which is multiple of 63 and the unit digit of which is 3, is 63 × 11 = 693
Therefore, we can conclude our answer by this statement
From the statement II, the number is divisible by 21 therefore, LCM of 21 and 7 = 21
There are many numbers like, 273, 483 —- which is divisible by 21 and 7, and the unit digit of which is 3
Therefore, we could not get a unique answer by this statement.
Therefore, the data in statements I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question.

Posted on: Mar 2023
Report

Leave a comment

Your email address will not be published. Required fields are marked *