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Given an alphabet of 26 letters, with 21 consonants, and 5
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30 Dec 2017, 13:26
30 Dec 2017, 13:26
1
Expert Reply
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Question Stats:
84% (01:45) correct
15% (01:30) wrong based on 19 sessions
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Given an alphabet of 26 letters, with 21 consonants, and 5 vowels, approximately how many three-letter words can be formed with a vowel as the middle letter and a consonant as the last letter?
A. 1000
B. 1500
C. 2500
D. 3500
E. 4000
A. 1000
B. 1500
C. 2500
D. 3500
E. 4000
Drill 1
Question: 2
Page: 559
Question: 2
Page: 559
Re: Given an alphabet of 26 letters, with 21 consonants, and 5
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30 Dec 2017, 14:36
30 Dec 2017, 14:36
1
Expert Reply
Explanation
When you see the word approximately, you are being told to Ballpark. In this case, you have 26 possibile letters for that slot, 5 for the second slot, and 21 for the third slot. Estimate and call this 25 × 20 × 5.
The total is 2,500, so select choice C.
When you see the word approximately, you are being told to Ballpark. In this case, you have 26 possibile letters for that slot, 5 for the second slot, and 21 for the third slot. Estimate and call this 25 × 20 × 5.
The total is 2,500, so select choice C.
Re: Given an alphabet of 26 letters, with 21 consonants, and 5
[#permalink]
30 Dec 2017, 22:26
30 Dec 2017, 22:26
1
can u explain this more thoroughly?
