4000 2000 1000 500 250 125 ?

50000 10000 2500 500 125 ? 6.25

The number of points having position vector a hat i + b hat j + c hatk , where 1 leq a,b,cleq10 and a,b,c in N , such that 2^a + 3^b+5^c is a multiple of 4 is (A) 1000 (B) 500 (C) 250 (D) 125

The number of points having position vector a hat i + b hat j + c hatk , where 1 leq a,b,cleq10 and a,b,c in N , such that 2^a + 3^b+5^c is a multiple of 4 is (A) 1000 (B) 500 (C) 250 (D) 125

The number of points having position vector a hat i + b hat j + c hatk , where 1 leq a,b,cleq10 and a,b,c in N, such that 2^a + 3^b+5^c is a multiple of 4 is (A) 1000 (B) 500 (C) 250 (D) 125

The smallest natural number which is a perfect square and which ends in 3 identical digits lies between (a) 1000 and 2000 (b) 2000 and 3000 (c) 3000 and 4000 (d) 4000 and 5000

The following table gives the distribution of the life time of 400 neon lamps: Lite time: (in hours) Number of lamps 1500-2000 14 2000-2500 56 2500-3000 60 3000-3500 86 3500-4000 74 4000-4500 62 4500-5000 48 Find the median life.

The following table gives the distribution of the life time of 400 neon lamps: Lite time: (in hours) Number of lamps 1500-2000 14 2000-2500 56 2500-3000 60 3000-3500 86 3500-4000 74 4000-4500 62 4500-5000 48 Find the median life.

The following table gives the distribution of income of 100 families in a village. Calculate the standard deviation: Income Rs. 0-1000 1000-2000 2000-3000 3000-4000 4000-5000 5000-6000 No. of Families 18 26 30 12 10 4

The following table gives the distribution of income of 100 families in a village. Calculate the standard deviation: Income Rs., 0-1000, 1000-2000, 2000-3000, 3000-4000, 4000-5000, 5000-6000 No. of Families, 18, 26, 30, 12, 10, 4

Find the sum of the roots (real or complex) of the equation x^2001 + (1/2-x)^2001=0 . (a) 2000 (b) 2001 (c) 1000 (d) 500