Who among the following was the first Chairman of the

Mean of a grouped data calculated using direct method, assumed mean method or step deviation method:

If p:q = 5:7 and p + q = 408, then find the value of (q - p).

What is the median of 5, 2.5, 7, 8, 1.5,14 and 4?

The sum of three numbers is 226. If the ratio of the first to the second is 4:5 and that of second to the third is 7: 10 then the second number is?

The mean of a data set is 50 and the standard deviation is 10. What is the coefficient of variation?

Which of the following statement(s) is/are correct?

The sum to n terms of the series 1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 7 …………………… is

3600, 600, 120, 30, 10, ?

‘479385A267’ is ten-digit number which is divisible by 9, what is the value of ‘A’?