Recent questions in Engineering Mathematics

#3301
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I have a query here. For the case 4 when 4 tosses are made shouldn’t the probability be $\frac{1}{8}$ instead of $\frac{1}{16}$ because at 4th toss, it be might be HHHT, or HHHH(he makes atmost 4 tosses)?Please guide.
#3302
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1 votes
A medical student has to work in a hospital for five days in january.However,he is not allowed to work two consecutive days in the hospital.in how many different ways can he choose the five days ... D)C(26,4)
#3303
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1 answers
1 votes
The diameters of $10000$ ball bearings were measured. The mean diameter and standard deviation were found to be $10mm$ and $0.05mm$ respectively. Assuming Gaussian distribution of ... will be(A) 230 (B) 115 (C) 15 (D) 2
#3304
238
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#3305
302
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#3306
186
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Find the nth derivative of the followingy = x^3 sin 2x
#3307
473
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1 votes
#3308
305
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1 answers
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how many different trees possible with 5 nodes?
#3309
6.5k
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1 answers
1 votes
how to solve this series:
#3310
507
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2 answers
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what is the difference between commutative and symmetric
#3311
3.8k
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1 answers
1 votes
In a sample of 100 students, the mean of the marks (only integers) obtained by them in a test is 14 with its standard deviation of 2.5(marks obtained can be fitted with a normal ... z=0.6 is 0.2257 ; and between z=0 and z=1.0 is 0.3413)
#3312
17.6k
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1 answers
4 votes
X and Y are two independent random variables with variances 1 and 2 respectively. Let Z=X-Y. The variance of Z is _____.
#3313
1.4k
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Divide 75 into three parts such that their product is maximum.
#3314
370
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Please explain in some detail.
#3315
611
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1 answers
1 votes
How many distinct unlabeled graphs are there with 4 vertices and 3 edges?
#3316
671
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1 answers
1 votes
#3317
288
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f(x)=ln x +xg(x)=x^2 sin(x)h(x)=x^3-xwhich of them are represents the many-to-one function?
#3318
286
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consider a complete garph on 2^(log(2^10)) vertices then the minimum number of edge removal operations needed to make graph disconnected
#3319
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in how many ways 4 different balls can be distributed in 5 different boxes so that no box contains all 4 balls
#3320
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Suppose each of three men at a party throws his hat into the center of the room. The hats are first mixed up and each man randomly selects a hat. what is the ... All of three men select his own hat.b.None of three men select his own hats.