Question
Novita's current age is 37.5% greater than Suzuka's,
with a difference of 15 years between their ages. Calculate the ratio of Novita's age to Suzuka's age 5 years from now.Solution
Let present age of Suzuka be '8x' years. So, present age of Novita = 8x X 1.375 = '11x' years ATQ; 11x - 8x = 15 Or, 3x = 15 So, x = 5 5 years hence from now, Age of Novita = 11x + 5 = 55 + 5 = 60 years Age of "b' = 8x + 5 = 40 + 5 = 45 years Required ratio = 60:45 = 4:3
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The deseasonalised time - series data will have only trend (T), cyclical (C) and irregular (I) components and is expressed as:
The grouped data for the observation are as follows.
Class :Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2-4Â Â Â Â Â Â Â Â 4-6Â Â Â Â Â Â Â Â Â 6-8<...
These seventh decile (D7) of data set 4, 3, 10, 9, 1 is
The coefficient of correlation is the _________ of coefficients of regression.
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
Which option is WRONG?
Which option is incorrect for the component of ti.me series.
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