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Out of 12 consonants and 4 vowels, how many words of 6 consonants and 3 vowels can be formed?

Asked by Veena 30/09/2016 Last Modified 01/10/2016

14 Answers

Learn Class XI-XII Tuition (PUC) +2 Mathematics Permutations

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what is the value of i exponent i where i = square root negative 1

0.20788 exp(i*x) = cos(x) + i*sin(x) exp(i*Pi/2) = cos(Pi/2) + i*sin(Pi/2) = i square both the sides now. i^i = exp(i*i*Pi/2) = exp(-Pi/2) = 0.20788 Interesting fact is that i raised to the i-th power is actually a real number!

Kumar Upendra Akshay

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A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to a.) 72 AT / m. b.) 144 AT / m. c.) 196 AT / m. d.) 222 AT / m.

Solution: Wire length l=2.5 m; Current i = 100 A; Magnetizing force h = ?. In square, length of each side; 2a = l / 4 ? a = 2.5 / 8 = 0.3125 h= sqrt(2) . i/ ( pi a) =sqrt(2) .100/(pi . 0.3125) =44 AT/m

Kumar Upendra Akshay

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Hey Akshay try this for a change The positive rational numbers may be arranged in the form of a simple series as follows ( 1 / 1 ), ( 2 / 1 ), ( 1 / 2 ) , ( 3 / 1 ), ( 2 / 2 ), ( 1 / 3 ) , ( 4 / 1 ) , ( 3 / 2 ), ( 2 / 3), ( 1 / 4 ), ... Show that ( p / q ) is the [ ( 1 / 2 ) ( p + q - 1 ) ( p + q - 2 ) + q ] th term of the series. I see you like solving problems on mathematics so give it an honest try on your own Also to those boasting about years of experience in mathematics, please stop boasting about yourself before the rest of the teachers. If you are good, you are good and I do not doubt that. We all are here to help and not boast and this space is for questions only and not boasting. Hope you all keep this in mind.

Dear G, I agree with the partitioning concept and what you have said is correct. Also, there is yet another way, as is often the case with mathematics, which is rather elementary, based on counting...

Santosh

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Substances having electrical resistivity intermediate between conductors and insulators are called __________.

Semiconductor

Narendra Kumar

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A die is thrown repeatedly until 6 comes up. What is the sample space for the experiment?

The sample space is infinite here in this case. The face value 6 can comes up at any trial. The sample space will be like {6, 16, 26, 36, 46, 56, 116, ......... }

Kumar Upendra Akshay

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One of the chapters in X standard Maths that students feel tough is the chapter of Mensuration. However, its one of the most easiest chapter to score as well!! How? Lets take an interesting formula on...

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Find The Area Of Trapeziam ABCD

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For NEET/ IIT Aspirants - Reaction With Butyllithium And Caron-Dioxide

Butyl-lithium is principally valued as an initiator for the ionic polymerization of dienes,such as butadienes. The reaction is called "carbolithiation". C4H9LI + CH2=CH-CH=CH2 → C4H9-CH2-CH=CH-CH2Li Butyl-lithium...

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