model 2 divisibility, multiples, add and subtract based number system Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 6 EXERCISES
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The following question based on number system topic of quantitative aptitude
(a) 16
(b) 18
(c) 19
(d) 12
The correct answers to the above question in:
Answer: (b)
First number (a) = 1125, Last number (an) = 4950,
Divisible by (d) = 225, No. of terms (n) = ?
No. of term formula, an= a+(n-1)d
Then, 4950= 1125 + (n - 1) 225
3825= 225n - 225
4050= 225n
n = 4050/225 = 18
Therefore, 18 numbers between 1000 and 5000 are exactly divisible by 225.
Practice number system (model 2 divisibility, multiples, add and subtract based number system) Online Quiz
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Read more divide multiple add subtract Based Quantitative Aptitude Questions and Answers
Question : 1
If m and n are positive integers and (m – n) is an even number, then (m2 – n2) will be always divisible by
a) 4
b) 6
c) 8
d) 12
Answer »Answer: (a)
In this problem, put any even positive value for both m & n,
For example m = 4 & n = 2
∴ (m2 – n2) = (42 – 22) = 16 - 4
= 12 is always divisible by 4.
Question : 2
When a number is divided by 56, the remainder obtained is 29. What will be the remainder when the number is divided by 8 ?
a) 4
b) 5
c) 3
d) 7
Answer »Answer: (b)
When the second divisor is a factor of the first divisor, the second remainder is obtained by dividing the first remainder by the second divisor.
Hence, on dividing 29 by 8, the remainder is 5.
Question : 3
(49)15 – 1 is exactly divisible by :
a) 50
b) 51
c) 29
d) 8
Answer »Answer: (d)
As we know, xn – an is exactly divisible by (x – a) if n is odd.
∴ (49)15 – (1 )15 is exactly divisible by 49 – 1 = 48, that is a multiple of 8.
Hence required answer is 8.
GET number system PRACTICE TEST EXERCISES
model 1 basic number system
model 2 divisibility, multiples, add and subtract based number system
model 3 fraction of numbers
model 4 finding unit place of a number
model 5 smallest and largest fraction/numbers
model 6 operations of consecutive numbers (odd, even, square, etc.)
number system Shortcuts and Techniques with Examples
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model 1 basic number system
Defination & Shortcuts … -
model 2 divisibility, multiples, add and subtract based number system
Defination & Shortcuts … -
model 3 fraction of numbers
Defination & Shortcuts … -
model 4 finding unit place of a number
Defination & Shortcuts … -
model 5 smallest and largest fraction/numbers
Defination & Shortcuts … -
model 6 operations of consecutive numbers (odd, even, square, etc.)
Defination & Shortcuts …
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