CSAT 2 nd paper practice. (test 4.)

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 1. The Average age of a group of 10 friends is 15 years . If one friend leaves the group , the average becomes 16 years . Find the age of the friend who left the group?

a) 5 years                               b)4 years                 c) 6 years         d)None of these.


2. Find the average squares of first five natural numbers?

a) 10                b) 11              c) 3              d) 5

3) Find the average of squares of consecutive even number till 10 ?  

 a) 30                      b) 44                  c) 40           d) 34

4) Find the average of consecutive add number 9?

              a. 3            b) 5               c) 7              d)9

5) If half of the journey is travelled at a speed of 15 m/h and the next half at  a speed of 12 m/h , find the average speed during the entire journey ?

a) 13 1/3                  b) 15 1/5                 c) 16 km/ h                  d ) 18 km/h 


6)  A man bought 20 cows in 200000 . If the average cost of 12 cows is 12500 , what will be the average cost of remaining cows?

a) 6000               b) 6150                c) 6250                  d) 6300


7) The average marks of 10 students of a class is 26 , where average marks of passed students is 80  and average marks of failed students is  20. Find the number of students who are passed?

a) 1                         b) 2                 c) 3               d)4


8.consider that 

                         1 .A is taller than B ,    2 . c is taller  than A , 3. D is taller than c , 4. E is tallest of all.

If they are made to sit in the above order of their height , then who will occupy the mid position?

a) A                   b) B                     c) C           d) D


9. In a class of 60 , where boys are twice that of girls , Alaka is ranked 17th from the top . If there are 9 boys ahead of  Alaka , then how many girls are after her in the rank?

a) 26             b) 12             c) 10            d)  33


10) There are seven persons up on a ladder , A, B, C, D ,E,F and G ( Not in the order ) A is further up than E but is lower than C . B is in the middle . G is between A and B . E is between B and F . If F is between E and D , the person on the bottom step of the ladder will be?

a) B            b) F               c) D            d) E

11) 12. The average salary of 100 employees in office is Rs . 16000 per month . The management decided to raise salary of every employees by 5 % but stopped a transport allowance  of Rs 800 per month which was paid earlier to every employee. What will be average monthly salary?

a) 16000                   b) 16500              c) 16800             d) Data insufficient

12) The average marks of 10 students of a class is 26 , where average marks of passed students is 80 and average marks of failed students is 20 . Find the number students who are passed ?

a) 1               b) 2              c) 3           d) 4

13) There are six person A B C D E and F.

     1. A has 3 item more than 3.

     2. D has 4 item less than B 

      3. E has 6 item less than F 

    4. C has 2 item more than E 

     5. F has 3 item more than D 

Which of the following figures cannot be equaln to the total number of item passed by all the 6 person? 

14) For rolling a dice probability of the even number .

  a)1/2             b)1/3          c) 1/4            d) 1/6

15. Find the probability of getting a multiple of 3 when one dice is thrown one.

 a) 1/2           b) 1/3                c) 1/4                d) 1/5.

















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