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) 1
(b) 0
(c) 3
(d) 2
The correct answers to the above question in:
Answer: (c)
The remainder will be same. On dividing 9 by 6, remainder = 3 On dividing 81 by 6, remainder = 3
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
When ‘n’ is divisible by 5 the remainder is 2. What is the remainder when $n^2$ is divided by 5 ?
a) 3
b) 2
c) 4
d) 1
Answer »Answer: (c)
Required remainder = Remainder obtained by dividing $2^2$ by 5.
Remainder = 4
Question : 2
A number being divided by 52 gives remainder 45. If the number is divided by 13, the remainder will be
a) 6
b) 5
c) 7
d) 12
Answer »Answer: (a)
Here, 52 is a multiple of 13. Hence, the required remainder is obtained on dividing 45 by 13. Required remainder = 6.
Question : 3
A number when divided by 192 gives a remainder of 54. What remainder would be obtained on dividing the same number by 16 ?
a) 4
b) 2
c) 8
d) 6
Answer »Answer: (d)
Here, the first divisor 192 is a multiple of second divisor 16.
∴ Required remainder
= remainder obtained by dividing 54 by 16 = 6
Question : 4
64329 is divided by a certain number. While dividing, the numbers, 175, 114 and 213 appear as three successive remainders. The divisor is
a) 224
b) 184
c) 296
d) 234
Answer »Answer: (d)
Question : 5
A number when divided by 5 leaves a remainder 3. What is the remainder when the square of the same number is divided by 5 ?
a) 2
b) 1
c) 4
d) 3
Answer »Answer: (c)
If the quotient in the first case be x.
Then, number = 5x + 3
On Squaring, the number
= $(5x + 3)^2$
= $25x^2$ + 30x + 9
On dividing by 5, remainder
= 9 – 5 = 4
Question : 6
If $17^200$ is divided by 18, the remainder is—
a) 16
b) 17
c) 2
d) 1
Answer »Answer: (d)
$(17)^200$ = $(18 –1)^200$
We know that
$ (x + a)^n$ =$x^n + nx^(n–1).a + {n(n - 1)}/{1 × 2}x^{n - 2}a^2 +{n(n - 1)(n - 2)}/{1 × 2 × 3}x^{n - 3}a^3+…+a^n$
We see that all the terms on the R.H.S. except $a^n$ has x as one of its factor and hence are divisible by x. So,$(x +a)^n$ is divisible by x or not will be decided by $a^n$ . Let x = 18, a = – 1 and n = 200
∴ $(18 –1)^200$ is divisible by 18 or not will depend on $(–1)^200$ as all other terms in its expansion will be divisible by 18 because each of them will have 18 as one of their factors.
$(–1)^200$ = 1 (Since 200 is even)
1 is not divisible by 18 and is also less than 18.
∴1 is the remainder
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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