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Start learning 50% faster. Sign in nowIn an A.P a9 = 40, then find sum of first 17 terms of that A.P.
The mean of a data set is 50 and the standard deviation is 10. What is the coefficient of variation?
The ratio of selling price, cost price, and marked price of an article is 4:2:7, respectively. If there is a profit of Rs. 600 in the transaction, then ...
Two different alloys contain steel and aluminum in the ratios of 11:4 and 2:13, respectively. In what proportion should these two alloys be combined to ...
What is the sum of the first 14 terms of an arithmetic progression if the first term is -21 and last term is 40?
21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.
The sum of 6 consecutive odd numbers is 156. What will be the product of first number and the last number?
The area of a square is 900 cm2 which is 120 cm2 less than that of a rectangle. Find the perimeter of the rectangle if the length ...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
If the number 9458k2 is divisible by 8, then find the number of possible values of 'k'.
