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The correct answer is C
nth term of an AP is 0. If AP is 63, 60, 57…, then find the value of n.
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 ...
The mean of the observations 29, 36, 21, 18, 7, 19, k, k is 19. 25 and the mode of the observations 29, 22, 15, 22, 18, 21. p. p is 29. Find the value o...
A man wants to invest Rs. 60660 in bank accounts of his two sons whose ages are 12 years and 16 years in such a way that they will get equal amount at a...
How many three digit numbers are divisible by 5?
The average of 20 numbers is calculated as 35. However, it was later discovered that one of the numbers was mistakenly recorded as 28 instead of 82. Wha...
Boat ‘A’ can cover 320 km in still water in 16 hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:3 and the sp...
The mean of a distribution is 25 and the standard deviation is 5. What is the value of coefficient variation?
Which of the following statement(s) is/are correct?
(I) The area of a parallelogram with a base of ...
What is the sum of the first 14 terms of an arithmetic progression if the first term is -21 and last term is 40?