Time Sequence problems
- 1. A class of boys stands in a single line, One boy is 19th in order from both the ends, How many boys are there in the class ?
Options- A. 37
- B. 39
- C. 27
- D. 38 Discuss
Correct Answer: 37
Explanation:
Number of boys in the class = (18 + 1 +18) = 37
- 2. Three persons A, B and C are standing in a queue. There are five persons between A and B and eight persons between B and C. If there be three persons ahead of C and 21 persons behind A, what could be the minimum number of persons in the queue?
Options- A. 41
- B. 40
- C. 28
- D. 27 Also asked in: AIEEE, Bank Exams, CAT, Bank Clerk, Bank PO
Correct Answer: 28
Explanation:
Three persons A, B, C can be arranged in a queue in six different ways, ie ABC, CBA, BAC, CAB, BCA, ACB. But since there are only 3 persons ahead of C, so C should be in front of the queue. Thus, there are only two possible arrangements, ie CBA and CAB.
We may consider the two cases as under:
Case I:
Clearly, number of persons in the queue = (3+1+8+1+5+1+21=) 40
Case II:
Number of persons between A and C
= (8 - 6) = 2
Clearly number of persons in the queue = (3+1+2+1+21) = 28
Now, 28 < 40. So, 28 is the minimum number of persons in the queue.
- 3. How many such digits are there in the number 7346285 which are as far away from the beginning of the number, as they will be when arranged in ascending order within the number?
Options- A. None
- B. one
- C. Two
- D. Three Also asked in: Bank Exams, Bank PO
Correct Answer: Two
Explanation:
Given Number : 7346285
Ascending Number : 2345678
Answer is Two. Those digits are 3,4
- 4. If the 30th january 2003 was thursday, what was the day day on 2nd march, 2003?
Options- A. sunday
- B. thursday
- C. tuesday
- D. saturday Discuss
Correct Answer: sunday
Explanation:
30th january, 2003 was thursday.
So, 6th, 13th, 20th, 27th february were all thursdays.
thus 2nd march, 2003 was 3 days after thursday, i.e. , sunday
- 5. In a class of 180, where girls are twice the number of boys, Rupesh[a boy] ranked 34th from the top. If there are 18 girls ahead of Rupesh, how many boys are after him in rank?
Options- A. 45
- B. 44
- C. 60
- D. can't be determined Also asked in: Bank Exams, AIEEE, Bank PO
Correct Answer: 44
Explanation:
No. of boys up to the 34th rank = 34-18 = 16
Total no of boys = 180x1/2+1 = 60
number of boys after the rank of Rupesh = 60 - 16 = 44
- 6. In a queue, Amrita is 10th from the front while Mukul is 25th from behind and Mamta is just in the middle of the two. If there be 50 persons in the queue. What position does Mamta occupy from the front ?
Options- A. 14th
- B. 16th
- C. 18th
- D. 20th Also asked in: AIEEE, Bank Exams, CAT, GATE, TOEFL, Bank Clerk, Bank PO
Correct Answer: 18th
Explanation:
Number of persons between Amrita and Mukul = 50 - (10 + 25) = 15. Since Mamta lies in middle of these 15 persons, so Mamta`s position is 8th from Amrita i.e. 18th from the front.
- 7. Rajan is sixth from the 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 ?
Options- A. 24
- B. 26
- C. 23
- D. 25 Discuss
Correct Answer: 24
Explanation:
Number of boys in the row = (6 + 10 + 8) = 24
- 8. If tuesday falls on 4th of month, then which day will fall three days after the 24th ?
Options- A. monday
- B. tuesday
- C. friday
- D. thursday Discuss
Correct Answer: thursday
Explanation:
The 4th day is tuesday, then 11, 18, 25th also tuesdays
Then 3 days after 24th is 27th, which is thursday
- 9. Sanjeev ranks seventh from the top and twenty eighth from the bottom in a class. How many students are there in the class?
Options- A. 33
- B. 36
- C. 35
- D. 34 Also asked in: AIEEE, Bank Exams, CAT, Bank Clerk, Bank PO
Correct Answer: 34
Explanation:
Total number of students in the class = 28 + 6 i.e, from top(7-1)
28 + 6 = 34
- 10. Some boys are sitting in a row. P is sitting fourteenth from the left and Q is seventh from the right. If there are four boys between P and Q, how many boys are there in the row ?
Options- A. 26
- B. 24
- C. 25
- D. 22 Also asked in: AIEEE, Bank Exams, CAT, Bank Clerk
Correct Answer: 25
Explanation:
Number of boys in the row = number of boys uptil P + number of boys between P and Q + number of boys including Q and those behind Q = 14 + 4 + 7 = 25.
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