1)the probability of getting a tail on throwing a unbiased coin is ......................

2)the probability of getting a head on throwing a unbiased coin is......................

3)in one thousand lottery tickets ,there are 50 prizes to be given.the probability that venkatesh winning a prize ,who bought one ticket is

a)1/50 b)1/1000 c)1/20 d)1/10

4)the probability that a non-leap year has 53 sundays ,is

a)6/7 b)5/7 c)2/7 d)1/7

5)the probability that a leap year has 52 Mondays

a)3/7 b)2/7 c)6/7 d)5/7

STATISTICS

1)the arithmetic mean of first 'n' natural numbers

a)n/2+1 b)(n-1)/2 c)(n+1)/2 d)n/2

2)the mean of first 'n' odd natural numbers

a)n/2 b)n c)n² d)(n+1)/2

3)ogive can be used to find ..........................of a frequency.

4)the mode of a frequency distribution can be determined graphically from ............................

5) an ogive is a graphical representation of ...................................

6)if the mean of of scores 12,15,x, 19,25 and 44 is 25 then x=..........................