{"id":43223,"date":"2020-10-21T14:46:05","date_gmt":"2020-10-21T09:16:05","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=43223"},"modified":"2020-10-21T14:46:05","modified_gmt":"2020-10-21T09:16:05","slug":"number-system-questions-for-rrb-ntpc-set-4-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/number-system-questions-for-rrb-ntpc-set-4-pdf\/","title":{"rendered":"Number System Questions for RRB NTPC Set-4 PDF"},"content":{"rendered":"

Number System Questions for RRB NTPC Set-4 PDF<\/strong><\/span><\/h2>\n

Download RRB NTPC Top-10 Number System Questions Set-4 PDF. Questions based on asked questions in previous exam papers very important for the Railway NTPC exam.<\/p>\n

Download Number System Questions for RRB NTPC Set-4 PDF<\/a><\/p>\n

Take a free mock test for RRB NTPC<\/a><\/p>\n

Download RRB NTPC Previous Papers PDF<\/a><\/p>\n\n

Question 1:\u00a0<\/b>Find the least number which should be subtracted from 9999 so that the difference is exactly divisible by 16?<\/p>\n

a)\u00a015<\/p>\n

b)\u00a012<\/p>\n

c)\u00a014<\/p>\n

d)\u00a013<\/p>\n

Question 2:\u00a0<\/b>The LCM and HCF of two numbers are 4284 and 32, respectively. If one of the numbers is 672, then the second number is;<\/p>\n

a)\u00a0102<\/p>\n

b)\u00a064<\/p>\n

c)\u00a0204<\/p>\n

d)\u00a092<\/p>\n

Question 3:\u00a0<\/b>Let n be the number of different 5-digit numbers divisible by 4, with the digits 4, 5, 6, 7, 8 and 9, no digit being repeated in the numbers. What is the value of n?<\/p>\n

a)\u00a08<\/p>\n

b)\u00a024<\/p>\n

c)\u00a0168<\/p>\n

d)\u00a0192<\/p>\n

Question 4:\u00a0<\/b>The LCM of 56, 84 and 112 is:<\/p>\n

a)\u00a0210<\/p>\n

b)\u00a0336<\/p>\n

c)\u00a0420<\/p>\n

d)\u00a0168<\/p>\n

Question 5:\u00a0<\/b>The HCF of 42, 63 and 105 is:<\/p>\n

a)\u00a07<\/p>\n

b)\u00a0630<\/p>\n

c)\u00a063<\/p>\n

d)\u00a021<\/p>\n

FREE RRB NTPC MOCK TEST<\/a><\/p>\n

FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n

Question 6:\u00a0<\/b>Three bells ring at intervals of 15, 30 and 45 minutes respectively. At what time will they
\nring together again, if they rang simultaneously at 8.00 AM ?<\/p>\n

a)\u00a08.30 AM<\/p>\n

b)\u00a09.30 AM<\/p>\n

c)\u00a09.00 AM<\/p>\n

d)\u00a08.45 AM<\/p>\n

Question 7:\u00a0<\/b>Find the least number that is divisible by 12, 18, 21, and 30<\/p>\n

a)\u00a01020<\/p>\n

b)\u00a01260<\/p>\n

c)\u00a01620<\/p>\n

d)\u00a01060<\/p>\n

Question 8:\u00a0<\/b>Find the LCM of $ab^{2}c^{2}$, $a^{2}bc$ and $a^{3}b^{3}c^{2}$.<\/p>\n

a)\u00a0$abc$<\/p>\n

b)\u00a0$a^{2}b^{2}c^{2}$<\/p>\n

c)\u00a0$a^{3}b^{3}c^{2}$<\/p>\n

d)\u00a0$a^{3}b^{3}c^{3}$<\/p>\n

Question 9:\u00a0<\/b>Find the largest two-digit prime number.<\/p>\n

a)\u00a091<\/p>\n

b)\u00a097<\/p>\n

c)\u00a093<\/p>\n

d)\u00a089<\/p>\n

Question 10:\u00a0<\/b>What is the difference between the place and face values of ‘5’ in the number 3675149?<\/p>\n

a)\u00a04995<\/p>\n

b)\u00a05000<\/p>\n

c)\u00a0495<\/p>\n

d)\u00a04990<\/p>\n

RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n

Download General Science Notes PDF<\/a><\/p>\n

Answers & Solutions:<\/strong><\/span><\/p>\n

1)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

$\\frac{9999}{16} = 624\\frac{15}{16}$<\/p>\n

$\\frac{15}{16}\\times 16 = 15$<\/p>\n

This 15 is needed to be subtracted from 9999 to get a number which is exactly divisible by 16<\/p>\n

Option A is correct.<\/p>\n

2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

HCF is 32<\/p>\n

LCM is 4284<\/p>\n

Let the other number be x<\/p>\n

We know that HCF * LCM = produce of 2 numbers.<\/p>\n

$32\\times 4284 = 672 \\times x$<\/p>\n

$x =\\frac{32\\times4284}{672}$<\/p>\n

$x = 204$<\/p>\n

Option C is correct.<\/p>\n

3)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

4)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Find the prime factorization of 56,84,112
\n56 = 2 \u00d7 2 \u00d7 2 \u00d7 7 ………i)<\/p>\n

84 = 2 \u00d7 2 \u00d7 3 \u00d7 7……….ii)<\/p>\n

112= 2 \u00d7 2 \u00d7 2 \u00d72 \u00d77………iii)<\/p>\n

Multiply each factor the greater number of times it occurs in steps i) , ii) or\u00a0iii) above to find the lcm:<\/p>\n

LCM = 2 \u00d7 2 \u00d7 2 \u00d7 2\u00d73 \u00d7 7<\/p>\n

=336<\/p>\n

5)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

42 = $ 2 \\times 3 \\times 7$<\/p>\n

63 =\u00a0$ 3 \\times 3 \\times 7$<\/p>\n

105 =\u00a0 $ 3 \\times 5 \\times 7$<\/p>\n

Taking the common factors, the HCF would be 21.<\/p>\n

So , the answer would be option d)21.<\/p>\n\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n

6)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Given that three bells rang at intervals of 15, 30 and 45 minutes respectively.
\nThey will together ring again in 90 minutes (LCM of 15, 30, 45).
\n90 minutes = 01 : 30 hours
\nThen, After 8 : 00 AM, they will again ring together in 08 : 00 + 01 : 30 = 09 : 30 AM<\/p>\n

7)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

$12=2\\times 2\\times 3$<\/p>\n

$18=2\\times 3\\times 3$<\/p>\n

$21 =3\\times 7$<\/p>\n

$30 =2\\times 3\\times 5$<\/p>\n

Select the common terms<\/p>\n

LCM = $2\\times 2\\times 3\\times 3\\times 5\\times 7$<\/p>\n

= 1260<\/p>\n

8)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

$ab^{2}c^{2}$, $a^{2}bc$ and $a^{3}b^{3}c^{2}$.<\/p>\n

LCM<\/p>\n

<\/figure>\n

$=(abc)\\times(bc)\\times(a)\\times(ab)$<\/p>\n

$=a^{3}b^{3}c^{2}$<\/p>\n

9)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

10)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

Given number = 3675149<\/p>\n

Face value of 5 = 5<\/p>\n

Place value of 5 = 5000<\/p>\n

difference between the place and face values of ‘5’ in the number 3675149= 5000-5 = 4995<\/p>\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n\n

We hope this Top-10 Number System Questions Set-4 PDF for RRB NTPC exam will be highly useful for your Preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Number System Questions for RRB NTPC Set-4 PDF Download RRB NTPC Top-10 Number System Questions Set-4 PDF. Questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Download RRB NTPC Previous Papers PDF Question 1:\u00a0Find the least number which should be subtracted from 9999 so that the difference is […]<\/p>\n","protected":false},"author":42,"featured_media":43228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[3167,125,31,1701,1679,1605,1603,1673],"tags":[4281,4117,492,1635,1593],"class_list":{"0":"post-43223","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads-en","8":"category-featured","9":"category-railways","10":"category-rpf-si-and-constable","11":"category-rrb-group-d","12":"category-rrb-je","13":"category-rrb-ntpc","14":"category-rrb-para-medical-categories","15":"tag-number-system-questions","16":"tag-railway-exams","17":"tag-rrb-group-d","18":"tag-rrb-je","19":"tag-rrb-ntpc"},"better_featured_image":{"id":43228,"alt_text":"Number System Questions for RRB NTPC Set-4 PDF","caption":"Number System Questions for RRB NTPC Set-4 PDF\n","description":"Number System 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