number system Model Questions & Answers, Practice Test for ssc cgl tier 2

ssc cgl tier 2 SYLLABUS WISE SUBJECTS MCQs

Number System

Percentage

Averages

Question :16

The sum of all possible products taken two at a time out of the numbers ±1, ±2, ±3, ±4 is

Answer: (a)

(+1) (–1)+ (+2)(–2)+ (+3)(–3)+ (+4)(–4)

= - 1 - 4 - 9 - 16 = - 30

Question :17

A number was divided successively in order by 4, 5 and 6. The remainders were respectively 2, 3 and 4. The number is

Answer: (a)

4XRemainders
5Y- 2
6Z- 3
1- 4

z = 6 × 1 + 4 = 10

y = 5 × 10 + 3 = 53

x = 4 × 53 + 2 = 214

Question :18

What is 783 times 869?

Answer: (b)

783 × 869 = 680427

Question :19

What is the remainder when $4^96$ is divided by 6?

Answer: (c)

$4^96/6$

When $4^1$ is divided by 6 then remainder = 4

$4^2$ is divided by 6 then remainder = 4

$4^3$ is divided by 6 then remainder = 4

$4^4$ is divided by 6 then remainder = 4 ................................................................
...............................................................

$4^96$ divided by 6 then remainder = 4

Question :20

What is 131 times 333 ?

Answer: (a)

? = 333 × 131 = 43623

ssc cgl tier 2 IMPORTANT QUESTION AND ANSWERS
Number System ssc cgl tier 2 question answer with explanation PDF

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