Q1In a election the number of candidates is one more than the no of members to be elected.If a voter can vote in254 ways, find the number of candidates.
a,8 b,10 c,7 d, none
Q2From 17 consonants and 5 vowels,how many words of 3 consonants and two vowels can be made if all the letters are different.
a 810000 b 816000 c 815000 d none
Q3A boat is to be manned by 8 men of which 3 can row only one side and two only on the other.In how many ways can the crew be arranged?
a 1720 b 7700 c 1728 d none
Q4For a normal distribution,the first moment about origin is 35 and the second moment about is 10.Find the four central moments
a 5,10,0,100 b 10,6,0,200 c 0,10,0,300 d,none
Q5 Find the sample size such that the probability of the sample means differing from the population mean nby not more than 1/10th of the S.D. IS 0.95.
a 300 b 384 c 395 d none
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