Question
The average of 25 values is 62. The average of the first
13 values is 60, and the average of the last 13 values is 65. If the 13th value is excluded, find the average of the remaining values (accurate to two decimal places).Solution
ATQ, The sum of 25 values = (25 × 62) = 1550 The sum of first 13 values = (13 × 60) = 780 The sum of last 13 values = (13 × 65) = 845 Now, The 13th value = [(780 + 845) – 1550] = (1625 – 1550) = 75 The 13th value = 75 Now, If the 13th value is excluded, The sum of remaining values = (1550 – 75) = 1475 The average of remaining values = (1475 ÷ 24) = 61.46
If all the prime digits of the number 2786989346 are written first (in increasing order) followed by even digits(in increasing order) and then odd digit...
How many pairs of letters are there in the word COMPARISON’ which has as many letters between them (both forward and backward) in the word as in the E...
If in the word ‘FRAGRANCE’, all vowels are replaced by its next letter and all consonant is replaced by its previous letter, then all letters are ar...
How many pairs of letters are there in the word 'FREEZING' which has as many letters between them in the word (both forward and backward) as in the Eng...
If third letter from the left end of each word from each group is to be considered, then which among the following group of words can make at least one ...
How many pairs of letters are there in the word "PROSPECTUS" which has as many letters between them (both in forward and backward direction) in the wor...
If all the letters in the word ‘SHARING’ are arranged in alphabetical order from left to right such that the vowels are arranged first followed by t...
If we arrange all the letters of the word ‘HESITATION in alphabetical order from the left end, then, how many letters will remain at same position aft...
How many such pairs of letters are there in the word ‘SUMMER’ that maintain their positional sequence as in the English alphabetical series (both fo...
If it is possible to make to make only one meaningful word with the first, second, fifth and seventh letters of the word “STRAWBERRY”, which of the...
Relevant for Exams:
