Question
Average 20 numbers is ‘x’. If the average of first
12 numbers is 65.5 while average of last 5 numbers is 72.4 and 13th, 14th and 15th numbers are (2x - 40), (x + 52) and 183 respectively. Find the 14th number.Solution
According to question, => 20x = 65.5 × 12 + 72.4 × 5 + 2x – 40 + x + 52 + 183 => 17x = 1343 => x = 79 Therefore, 14th number = 79 + 52 = 131
More ESIC Part B Questions
Which one of the following is not a search engine ?
What is the function of a modem?
What is the primary purpose of virtual memory?
A group of 8 bits is known as a ________.
Which generation of computers used vacuum tubes?
Which of the following is used to align text to the center in MS Word?
Which function is used in Excel to automatically sum up a range of cells?
Which memory type has the fastest access time?
OSI is an ISO standard for worldwide communications that defines a networking framework for implementing protocols. What does ‘O’ stand for?
The first web browser is
Relevant for Exams:
