RRB Group D Analysis| Number Series Reasoning | Number System | Reasoning Classes| #shorts

Molecular Mass || Gram Molecular Mass || Number of Moles || Number of Molecular Atomicity || Class Illustration with Short Tricks

Number of groups in d-block

Description OF Series || Lyman Series || Balmer Series || Paschan Series || Class Illustrations with Short Tricks

Assertion : Avogadro number is the number of atoms in onegram mole. Reason : Avogadro number is a dimensionless constant.

The reason for the increasing number of malaria patients is that

Direction: Read the following information carefully and answer the following questions. Statement I- There are 3 groups of students X, Y and Z and they study in different classes A, B and C. Number of students in class A is 120. Statement II- Number of students in class C is 80% of total number of students in class A and class B. Number of group X students in class A is 1/3rd of total number of students in class A. Total number of group X and group Y students in class B is 40. Statement III- Ratio of group Y and group Z students in class A is 3 : 1. Ratio of group X and group Y students in class B is 3 : 1. Total number of students in class B is 250% of total number of students of group X and group Y. Statement IV- Ratio of group X, group Y and group Z students in class C is 3 : 5 : 3 Number of students in class A is what % of number of students in class B?

A group of student in a class decided to collect as many Rs. from each member of the group as in the number of members. If class teacher donates Rs. 25 and thus total collection is Rs. 169, then find the total no. of the students in the class.