100+ Simplification Questions and Answers for Bank Exams - 2
Question: 6
A class starts at 10 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After every period, 5 minutes are given free to the students. The exact duration of each period is
(A) 42 minutes
(B) 44 minutes
(C) 48 minutes
(D) 51 minutes
Ans: C
Time between 10 a.m. and 13.27 hours = 3 hrs. 27 min = 207 min.
For three periods in between free time = 15 min.
Remaining time = (207 – 15) min. = 192 min.
∴ Duration of each of the 4 periods = $$({192} /{ 4})$$ min = 48 min.
Question: 7
A boy multiplied 423 by a number and obtained 65589 as his answer. If both the fives in the answer are wrong and all the other figures are correct, the correct answer is
(A) 62389
(B) 62189
(C) 61189
(D) 60489
Ans: D
Among the given numbers, only 60489 is a multiple of 423.
Question: 8
A printer numbers the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have?
(A) 1000
(B) 1064
(C) 1065
(D) 1074
Ans: D
No.of.digits in 1-digit page nos. = 1 x 9 = 9.
No.of.digits in 2-digit page nos. = 2 x 90 = 180.
No.of.digits in 3-digit page nos. = 3 x 900 = 2700.
No.of.digits in 4-digit page nos. = 3189 – (9 + 180 + 2700)
= 3189 – 2889 = 300.
∴ No.of.pages with 4-digit page nos. = $$({300} /{4})$$ = 74.
Question: 9
In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is
(A) 32
(B) 35
(C) 38
(D) 40
Ans: C
Let the number of correct answers be x.
Number of incorrect answers = (60 – x).
∴ 4x – (60 – x) = 130 ⇔ 5x = 190 ⇔ x = 38.
Question: 10
The number of girls in a class is 5 times the number of boys. Which of the following cannot be the total number of children in the class?
(A) 24
(B) 30
(C) 35
(D) 42
Ans: C
Let the number of boys = x.
Then, number of girls = 5x.
Total number of children = (x + 5x) = 6x.
Thus, the total number of children must be multiplied of 6.
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