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# Does hjw = 1?

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Math Expert
Joined: 02 Sep 2009
Posts: 55271

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06 Aug 2017, 07:47
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Difficulty:

35% (medium)

Question Stats:

76% (01:23) correct 24% (02:23) wrong based on 43 sessions

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Does hjw = 1?

(1) hj = 3
(2) hw = 1/3

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Joined: 19 Dec 2016
Posts: 47
Location: India
WE: Consulting (Computer Software)

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Updated on: 07 Aug 2017, 02:08
(1) hj = 3
(2) hw = 1/3

i) hj=3

if w=1/3 then hjw=1
if w is not equal to 1/3, we will not have hjw=1

not sufficient

(ii) hw = 1/3

if j=3 then hjw=1
if j is not equal to 3, we will not have hjw=1

not sufficient

combining i) and ii)

hj = 3
hw = 1/3

on multiplying these two we have-
h^2*j*w=1

so if h^2=h, which is possible if h=1, then hjw=1

if h^2 is not equal h(h is other than 1), then hjw will be equal to 1

so together too they are not sufficient.

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Originally posted by GTExl on 06 Aug 2017, 08:03.
Last edited by GTExl on 07 Aug 2017, 02:08, edited 1 time in total.
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Joined: 26 Mar 2013
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06 Aug 2017, 19:36
Does hjw = 1?

(1) hj = 3

Insufficient

(2) hw = 1/3

Insufficient

Combine 1 & 2

Let h=1 , j=3 , w=1/3..........then hjw =1..................Answer is Yes

Let h=3 , j=1 , w=1/9........then hjw =1/3..................Answer is NO

Does hjw = 1?   [#permalink] 06 Aug 2017, 19:36
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