aptitude average mcq pdf Model Questions & Answers, Practice Test for ibps rrb so officer sclae 2 3 single exam 2024
ibps rrb so officer sclae 2 3 single exam 2024 SYLLABUS WISE SUBJECTS MCQs
Number System
Lcm & Hcf
Ratio & Proportion
Percentage
Time & Work
Mensuration
Advance Math
Trigonometric Ratios & Identities
Average
Profit & Loss
X's age 3 years ago was three times the present age of Y. At present, Z's age is twice the age of Y. Also Z is 12 years younger than X. What is the present age of Z ?
Answer: (e)
Y's present age = y year (let)
∴ X's present age = (3y + 3) years
∴ Z's present age = 2y years
According to the question,
3y + 3 - 2y = 12
y + 3 = 12
= y = 12 - 3 = 9 years
∴ Z's present age = 2y
= 2 × 9 = 18 years
There were 46 students in a Boys hostel. Due to the admission of eight new students the expenses of the hostel mess were increased by Rs.42 per day while the average expenditure per head diminished by Rs. What was the original expenditure of the hostel mess?
Answer: (e)
54 × (x-1) - 46 × x = 42
8x = 96
x = 12
Original total expenditure:
46 × x = 46 × 12 = Rs.552
The weights of 19 people are in Arithmetic progression. The average weight of them is 19. If the heaviest is 37 Kgs. Then what is the weight of the Lightest?
Answer: (c)
19 × 19 = 19/2(2a + 18d)
38= 2a + 18d
37 = a + 18d
a = 1
What is the average of all numbers between 8 and 74 which are divisible by 7?
Answer: (a)
The numbers between 8 and 74 which are divisible by 7 are 14,21,28,35,42,49,56,63,70
Whose sum = $378/9$ = 42
The average height of 27 persons was recorded as 162 cm. If the height of Shreya was deleted from the observation, the average height reduced by 1 cm. What was Shreya's height?
Answer: (e)
[Tricky approach]
Height of shreyas
= 162 + 26 = 188 cm
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