Question
P got married 8 years ago. His present age is 5/3 times
his age at the time of his marriage. P’s sister was 10 years younger to him at the time of his marriage. The present age of P’s sister is:Solution
Let P’ age at the time of his marriage 8 years ago be 3x. His present age be = (5/3) × 3x = 5x According to question, => 5x – 3x = 8 => x = 4 years Now P’ age at the time of his marriage 8 years ago = 3x = 3 × 4 = 12 years And his present age = 5x = 5 × 4 = 20 years P’s sister age 8 years ago = 12 – 10 = 2 years So, present age of P’s sister = 2 + 8 = 10 years
A population is said to be stationary, if -
At the centre multipurpose socio-economic surveys are mainly conducted by -
Which of the following is yearly publication of CSO?
A systematic sample does not yield good result, if -
For discrete distribution, the co-efficient of kurtosis β₂ is -
The most appropriate measure to compare the consistency of two series is -
If Q₁, Q₂ and Q₃ are three quartiles of a frequency distribution, which of the following holds if the distribution is negatively skewed?
...From a population containing 30 units, 5 units are drawn by simple random sampling without replacement. The probability same specified unit included in ...
The most appropriate diagram to represent data relative to monthly expenditure on different items of a family is -
Suppose for estimating y, the equation Ŷ= 5 – 2x calculations are made on a given set of data, which of the following is true for this situation?
