`18/15` x `1.2`

If the mean of the data 9, 17, 18, 14, x, 16, 15, 11 and 12 is x, then find the value of x.

The range of the data 15, 18, 17, 16, 14, x, 12, 10, 9, 15 is 9. Which of the following is true about x ?

Find the HCF and LCM of 12, 15, 18, 27

Find the intervals in which f(x)=2x^(3)-12x^(2)+18x+15 is increasing or decreasing.

factorize the given expression 18x^2-15x-25

How many terms are there in the AP 18, 15(1)/(2), 13,…, -47?

If the mean of 20, 18 ,13 ,12, x and 10 is 15, then find the value of x.