Question
The average marks obtained by Saloni in four papers is
51, and in the fifth paper she gets 56 marks. Find her new average in all five papers.Solution
ATQ, Average marks obtained by Madhu in four papers = 51 Sum of marks obtained by Madhu in four papersĀ Ā = 51 Ć 4 = 204 Number of marks in fifth paper = 56 Sum of all five papers =Ā = 204 + 56 = 260 Average of all five papersĀ = 260/5 = 52
Addition of ethylene dibromide to petrolĀ
What is the process of changing a substance directly from solid to gas called ?
A nucleus X of mass number 238 undergoes 3 Ī±-decays and 2 Ī²ā»-decays successively. The mass number and atomic number of the resulting nucleus Y are:...
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
What is the smallest unit of the kidney called?
Which period and group in the long form of periodic table contain maximum number of elements?
Galvanisation is the process of depositing a layer of ________ on iron.
You will see that the atomic radius decreases in moving from left to right along a period in the Periodic Table. The reason for this is-
Which planet is known as the Red Planet?
Which muscle type is involuntary and found in internal organs?
Relevant for Exams:
