Calculation Tricks - 25, 35, 45, 55 .. ka square ek second me nikale | Shorts by JP Sir

Sachin made the following runs in different matches: {:("Runs",5-15,15-25,25-35,35-45,45-55),("Frequency"," "10," "12," "17," "19," "22):} Calculate the average mean of the runs by Step-deviation Method.

In the following series, how many such odd numbers are there which are divisible by 3 or 5, then followed by odd numbers and then also followed by even numbers? 12, 19, 21, 3, 25, 18, 35, 20, 22, 21, 45, 46, 47, 48, 9, 50, 52, 54, 55, 56.

Directions (Questions 21 to 25): Study the table given below and answer the questions that follow: Total Number of Employees in Different Departments of an Organization and Percentage of Females and Males Department Total No. of Employees Percentage of Females Percentage of Males IT 840 45 55 Accounts 220 35 65 Production 900 23 77 HR 360 65 35 Marketing 450 44 56 Customer service 540 40 60 What is the respective ratio of the number of females in Production department to the number of females in the Marketing department? (a) 22 : 23 (b) 35 : 33 (c) 23 : 22 (d) 33 : 35 (e) None of these

Calculate arithmetic mean from the following data by Short-cut Method: {:("Class Interval",20-25,25-30,30-35,35-40,40-45,45-50,50-55),("Frequency"," "10," "12," "8," "20," "11," "4," "5):}