গড়

 1. The average of 6 consecutive odd numbers is 64.Greatest of them is

6 টি ক্রমান্বয়ে পরপর অযুগ্ম সংখ্যার গড় হল 64 বৃহত্তম সংখ্যাটি হবে 

WBCS prelims-2022

a) 67

b) 65

c) 71

d) 69

2.The data of different natural numbers 4, 7, 10, 14, 2x + 3, 2x + 5, 22, 23, 30, 50 are in ascending order. How many possible values are there for the median of the data for various values of x ?

WBCS-2019

(a)Only one value

(b) Only two values

(c)Only three values

(d) only Five values

3.A boy recorded the weight of some of his friends as 32kg, 30kg, 40kg, 65kg, 54kg, 38kg, 36kg, 45kg, 50kg, 52kg, 40kg. What is the median ?

WBCS-2018

      (A) 38 kg       (B) 40 kg      (C) 45 kg      (D) 43.8 kg

4.Average of ten positive numbers is x¯¯¯. If each number is increased by 10%, then x¯¯¯

     WBCS-2018

 (A) remains unchanged.     (B) may decrease.     (C) may increase.     (D) is increased by 10%.