Which of The Following in the Largest Number?

  1. 31/3
  2. 51/5
  3. 21/2
  4. 71/7
Anurag Mishra Professor Asked on 8th October 2015 in Maths.
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1 Answer(s)

Answer: (3) 21/2.

Explanation:-
31/3, 51/5, 21/2, 71/7
Taken the LCM of 3, 5, 2, 7
Then, the LCM of 2, 3, 5, 7 = 2 x 3 x 5 x 7
= 210
Then, 31 x 70/3 x 70, 51 x 42/5 x 42, 21 x 105 /2 x 105, 71 x 30/7 x 30
= 370/210, 542/210, 2105/210, 730/210

Then, the largest number is 21/2.

Hence, the answer is (3) 21/2.

Anurag Mishra Professor Answered on 11th October 2015.
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