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# a, b, c, d and e are five consecutive positive integers. What is the

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Intern
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GMAT 1: 570 Q40 V28
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a, b, c, d and e are five consecutive positive integers. What is the [#permalink]

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Updated on: 09 Apr 2018, 01:16
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a, b, c, d and e are five consecutive positive integers. What is the unit's digit of $$a^b*c^d * e$$?

(1) c = 5
(2) a + b is six less than e + d.

source- time4education
[Reveal] Spoiler: OA

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Originally posted by Nixondutta on 08 Apr 2018, 23:39.
Last edited by Bunuel on 09 Apr 2018, 01:16, edited 1 time in total.
Renamed the topic and edited the question.
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Re: a, b, c, d and e are five consecutive positive integers. What is the [#permalink]

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09 Apr 2018, 00:06
Nixondutta wrote:
a, b, c, d and e are five consecutive positive integers. What is the unit's digit of $$a^b$$ * $$c^d$$ * e?
source- time4education

(1) c = 5
(2) a + b is six less than e + d.

From1:

if c=5 then sequence is 3,4,5,6,7

we can find the unit digit so sufficient.

From2:

seq1 can be 3,4,5,6,7
seq2 can be 4,5,6,7,8

so not sufficient.

Option A
Re: a, b, c, d and e are five consecutive positive integers. What is the   [#permalink] 09 Apr 2018, 00:06
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# a, b, c, d and e are five consecutive positive integers. What is the

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