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Recent questions tagged q5-i

The mean and standard deviation of 20 observations are found to be 10 and 2 respectively. On rechecking it was found that an observation 8 was incorrect. Calculate the correct mean and standard deviation If wrong item is omitted.

asked Jul 2, 2014 by meena.p

1 answer

A fair coin with 1 marked on one face and 6 on the other and a fair dice are both tossed.Find the probability that the sum of the numbers that turn up is 3

asked Jun 30, 2014 by sreemathi.v

1 answer

Three coins are tossed,describe two events which are mutually exclusive

asked Jun 27, 2014 by sreemathi.v

1 answer

Find the middle term in the expansion of $(\large\frac{x}{a}-\frac{a}{x})^{10}$

asked Jun 24, 2014 by sreemathi.v

1 answer

Find the intersection of the following set :(i) X={1,3,5},Y={1,2,3}

asked May 27, 2014 by sreemathi.v

1 answer

Are the following pair of sets equal? Give reasons :$(i)\; A= \{2,3\},B=\{x : x\; is\; solution\; of \ x^2+5x+6=0\}$

asked May 23, 2014 by sreemathi.v

1 answer

List of all the elements of the following set : A={x : x is an odd natural number }

asked May 23, 2014 by sreemathi.v

1 answer

Evaluate $\large\frac{n!}{(n-r)!}$ when $n=6,r=2$

asked May 13, 2014 by sreemathi.v

1 answer

Find the value :$\sin 75^{\large\circ}$

asked Apr 17, 2014 by sreemathi.v

1 answer

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