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Each of the two positive integers a and b ends with the digit 2. With

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Each of the two positive integers a and b ends with the digit 2. With  [#permalink]

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New post 04 Apr 2019, 00:14
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

100% (00:32) correct 0% (00:00) wrong based on 26 sessions

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Each of the two positive integers a and b ends with the digit 2. With  [#permalink]

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New post 04 Apr 2019, 02:08

Solution


Given:
    • a and b two positive integers.
    • a and b, both end with the digit 2.

To find:
    • Last digit of a - b.

Approach and Working:
    • Since a and b, both ends with the same digit, their subtraction will end with 0.

Hence, the correct answer is option A.

Answer: A

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Re: Each of the two positive integers a and b ends with the digit 2. With  [#permalink]

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New post 04 Apr 2019, 03:19
Bunuel wrote:
Each of the two positive integers a and b ends with the digit 2. With which one of the following numbers does a – b end?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4


given
a=b=2
a-b=0
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Re: Each of the two positive integers a and b ends with the digit 2. With  [#permalink]

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New post 07 Apr 2019, 18:46
Bunuel wrote:
Each of the two positive integers a and b ends with the digit 2. With which one of the following numbers does a – b end?

(A) 0
(B) 1
(C) 2
(D) 3
(E) 4



Since the units digit of each number is a 2, the units digit of the difference of those numbers is zero.

Answer: A
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Re: Each of the two positive integers a and b ends with the digit 2. With   [#permalink] 07 Apr 2019, 18:46
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