Question

With which place value should 3 in 2385 be exchanged so that the resulting number becomes greater than one - third of 8502? (The resulting number should be less than 3000)

• A. 2
• B. 8
• C. 5
• D. No exchange

Answer 1

The correct option is B 8

One - third of 8502 = $\frac{1}{3}$ $\times$ 8502

= 2834

Given number is 2385.

It is smaller than 2834.

If we exchange 3 with 2

we will have 3 at thousand position
3 > 2

So,
3285 > 2834 but we need a number which should be smaller than 3000.

So, lets exchange 3 with 8

We will have 2835

Values at thousand place, hundred place and tens place is same for 2835 and 2834 , let compare unit place place unit place

5 > 4

Therefore 2835 > 2834