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# Which of the following is equal to the value of 2^5 + 2^5 +

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Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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Updated on: 12 Jul 2014, 10:53
4
22
00:00

Difficulty:

5% (low)

Question Stats:

83% (00:30) correct 17% (00:45) wrong based on 633 sessions

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Which of the following is equal to the value of 2^5 + 2^5 + 3^5 + 3^5 + 3^5 ?

A. 5^6
B. 13^5
C. 2^6 + 3^6
D. 2^7 + 3^8
E. 4^5 + 9^5

Originally posted by japped187 on 07 Mar 2008, 02:53.
Last edited by Bunuel on 12 Jul 2014, 10:53, edited 1 time in total.
Renamed the topic, edited the question, added the OA and moved to PS forum.
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Re: Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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24 Jul 2013, 21:38
9
5
Rs1991 wrote:
2^5+2^5+3^5+3^5+3^5 = ?
a. 5^6

b. 13^5

c. 2^6 + 3^6

d. 2^7 + 3^8

e. 4^5 + 9^5

$$(2^5+2^5) + (3^5+3^5+3^5)$$
$$= 2*2^5 + 3*3^5$$ (You have two 2^5 so you club them as 2*2^5. Similarly for 3)
$$= 2^6 + 3^6$$
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Re: Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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07 Mar 2008, 03:10
3
3
2^5 + 2^5 + 3^5 + 3^5 + 3^5
= 2 (2^5) + 3 (3^5)
= 2^1 (2^5) + 3^1 (3^5)
= 2^(1+5) + 3^(1+5)
= 2^6 + 3^6

Ans: C
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Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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25 Jul 2013, 02:01
2
7
Rs1991 wrote:
Which of the following is equal to the value of 2^5 + 2^5 + 3^5 + 3^5 + 3^5 = ?

A. 5^6
B. 13^5
C. 2^6 + 3^6
D. 2^7 + 3^8
E. 4^5 + 9^5

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Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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03 Feb 2015, 02:09
I did it using the answer choices.

After reaching this point:
2^5 + 2^5 + 3^5 + 3^5 + 3^5
= 2 (2^5) + 3 (3^5)

I just took the answer choices from E upwards and rejected them.

E.g E. 4^5 + 9^5, has many more numbers that what we want, because 4^5 is equal to 2^10. No need to check 9^5.
D similarly has more numbers than we want, D. 2^7 + 3^8, since we have 2*2*2*2*2*2*2, so this is 2*2^6.

ANS C, gives as the number we are looking for.
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Re: Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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08 Jun 2017, 08:25
2
2^5 + 2^5 + 3^5 + 3^5 + 3^5

2^5 (1+1) + 3^5 (1+1+1)

2^5 (2) + 3^5 (3)

2*2*2*2*2*2 + 3*3*3*3*3*3

= 2^6 + 3^6
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Re: Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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02 Oct 2017, 10:42
1
Top Contributor
japped187 wrote:
Which of the following is equal to the value of 2^5 + 2^5 + 3^5 + 3^5 + 3^5 ?

A. 5^6
B. 13^5
C. 2^6 + 3^6
D. 2^7 + 3^8
E. 4^5 + 9^5

Given: 2^5 + 2^5 + 3^5 + 3^5 + 3^5

Notice that this expression has the same STRUCTURE as x + x + y + y + y
Simplifying, we get: x + x + y + y + y = 2x + 3y

LIKEWISE, 2^5 + 2^5 + 3^5 + 3^5 + 3^5 = 2(2^5) + 3(3^5)
= (2^1)(2^5) + (3^1)(3^5)
= 2^6 + 3^6

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Re: Which of the following is equal to the value of 2^5 + 2^5 +  [#permalink]

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08 Oct 2018, 06:18
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Re: Which of the following is equal to the value of 2^5 + 2^5 + &nbs [#permalink] 08 Oct 2018, 06:18
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