Question
Average of 15 observations calculated by a student was
65 but when he again went through his observations he realised that he took value of three observations as 55, 60 and 50 in place of 86, 44 and 75 respectively and also realised that total observations taken by him was 14. Find the original average of all observations taken by him.Solution
Sum of 15 observations = 15 × 65 = 975 Original average = {975 + (86 + 44 + 75) - (55 + 60 + 50)}/14 = 1015/14 = 72.5
In the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then followed ...
RBI said “growth prospects (A) financial markets remain nervous and (B) across the world are dampening (C) are characterised by high volatility and pr...
In the following sentences four words are given in bold. They may or may not be in the correct position in the sentence. You have to find out which tw...
Select the word that best expresses the meaning of the underlined word.
If you abstain from unnecessary criticism, you will be happ...
In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then ...
In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then f...
Given below is a sentence with 4 words highlighted. The words may or may not be in their correct positions. Rearrange the words if required to form a c...
In the question given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then followed...
In each of the questions given below three words are given in bold. These may or may not be in their correct position. The sentence is then followed by ...
In each of the questions given below four words are given in bold. These four words may or may not be in their correct position. The sentence is then f...
Relevant for Exams:
