(IGP) IAS Pre Paper - 2: GS - General Mental Ability - Number, Ranking & Time Sequence Test (MCQ -11)

1. If the positions of the first and the sixth digits of the number 2796543018 are interchanged, similarly the positions of the second and the seventh digits are interchanged and so on, which of the following will be the third to the left of seventh digit from the left end?
(a) 0
(b) 1
(c) 7
(d) 8

2. What will be the difference between the sum of the odd digits and the sum of the even digits in the number 857423?
(a) 0
(b) 1
(c) 2
(d) None of these

3. If each of the odd digits in the number 54638 is decreased by 1 and each of the even digits is increased by 1, then which of the following will be the sum of the digits of the new number?
(a) 25
(b) 26
(c) 28
(d) 29

4. How many times will you write even numerals if you write all the numbers from 291 to 300?
(a) 11
(b) 13
(c) 15
(d) 17

5. A number is greater than 3 but less than 8. Also, it is greater than 6 but less than 10. The number is?(a) 5
(b) 6
(c) 7
(d) 8

6. The positions of how many digits in the number 321465987 will remain same when the digits are arranged in ascending order?
(a) None
(b) One
(c) Two
(d) Three

7. How many such digits are there in the number 831729564, each of which is as far away from the begining of the number as when the digits are arranged in discending order?
(a) None
(b) One
(c) Two
(d) Three

8. How many such pairs of digits are there in the number 8314629 each ofwhich has asmany digits between them in the number as after arranging the digits in descending order?
(a) None
(b) One
(c) Two
(d) None of these

9. How many such pairs of digits are there in the number 95137248 each of which has as many digits between them in the number as when they are arranged in ascending order?
(a) None
(b) One
(c) Two
(d) Three

10. If it is possible tomake a number which is perfect square of a two-digit odd number with the second, the sixth and the ninth digits of the number 187642539, which of the following is the digit in the unit's place of that two-digit odd number?
(a) 1
(b) 7
(c) 9
(d) No such number can be made

11. Rajan is sixth fromthe left end and Vinay is tenth from the right end in a row of boys. If there are eight boys between Rajan and Vinay, how many boys are there in the row?
(a) 23
(b) 24
(c) 25
(d) 26

12. In a row of boys, A is fifteenth from the left and B is fourth from the right. There are three boys between A and B. C is just left of A. What is C's position fromthe right?
(a) 9th
(b) 10th
(c) 12th
(d) 13th

13. Rohit is seventeenth from the left end of a row of 29 boys and Karan is seventeenth from the right end in the same row. How many boys are there between them in the row?
(a) 3
(b) 5
(c) 6
(d) Data inadequate

14. In a rowof forty children, P is thirteenth fromthe left end and Q is ninth from the right end. How many children are there between P and R if R is fourth to the left of Q?
(a) 12
(b) 13
(c) 14
(d) 15

15. In a class of 35 students, Kunal is placed seventh from the bottom whereas Sonali is placed ninth from the top. Pulkit is placed exactly in between the two. What is Kunal's position from Pulkit?
(a) 9
(b) 10
(c) 11
(d) 13

16. Richard is fifteenth from the front in a column of boys. There were thrice as many behind him as there were in front. How many boys are there between Richard and the seventh boy from the end of the column?
(a) 33
(b) 34
(c) 35
(d) Data inadequate

17. Forth boys are standing in a row facing theNorth. Amit is eleventh fromthe left andDeepak is thirtyfirst from the right end of the row. How far will Shreya, who is third to the right of Amit in the row, be from Deepak?
(a) 2nd
(b) 3rd
(c) 4th
(d) 5th

18. In a class, among the passed students, Amisha is twenty-second from the top and Sajal, who is 5 ranks below Amisha, is thirty-fourth from the bottom. All the students from the class have apeared for the exam. If the ratio of the students who passed in the exam to those who failed is 4: 1 in that class, how many students are there in the class?
(a) 60
(b) 75
(c) 90
(d) Data inadequate

19. In a queue, A is eighteenth from the front while B is sixteenth from the back. If C is twentyfifth from the front and is exactly in the middle of A and B, then how many persons are there in the queue?
(a) 45
(b) 46
(c) 47
(d) 48

20. N ranks fifth in a class. S is eighth from the last. If T is sixth after N and just in the middle of N and S, then how many students are there in the class?
(a) 23
(b) 24
(c) 25
(d) 26

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