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Unit Digit and Last Digit Questions for SSC, Railway, Banking & Competitive Exams | Vitorr Classes

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Questions 1–10 (Bilingual)

Q1.

English: Find the unit digit of 584 × 389 × 476 × 786.

Hindi: 584 × 389 × 476 × 786 का इकाई अंक ज्ञात कीजिए।

A. 7
B. 3
C. 4
D. 6

Answer: D (6)


Q2.

English: Find the unit digit of 641 × 673 × 677 × 679 × 681.

Hindi: 641 × 673 × 677 × 679 × 681 का इकाई अंक ज्ञात कीजिए।

A. 9
B. 3
C. 6
D. 7

Answer: A (9)


Q3.

English: Find the unit digit of (5627)^153 × (671)^230.

Hindi: (5627)^153 × (671)^230 का इकाई अंक ज्ञात कीजिए।

A. 7
B. 9
C. 3
D. 1

Answer: A (7)


Q4.

English: Find the unit digit of (3625)^333 × (4268)^645.

Hindi: (3625)^333 × (4268)^645 का इकाई अंक ज्ञात कीजिए।

A. 6
B. 3
C. 4
D. 0

Answer: D (0)


Q5.

English: Find the unit digit of (3694)^1793 × (615)^317 × (841)^941.

Hindi: (3694)^1793 × (615)^317 × (841)^941 का इकाई अंक ज्ञात कीजिए।

A. 5
B. 3
C. 4
D. 0

Answer: D (0)


Q6.

English: Find the unit digit of (7^95 − 3^58).

Hindi: (7^95 − 3^58) का इकाई अंक ज्ञात कीजिए।

A. 7
B. 3
C. 4
D. 0

Answer: C (4)


Q7.

English: Find the unit place of (17)^1999 + (11)^1999 − (7)^1999.

Hindi: (17)^1999 + (11)^1999 − (7)^1999 का इकाई अंक ज्ञात कीजिए।

A. 0
B. 1
C. 2
D. 7

Answer: B (1)


Q8.

English: Find the unit digit of 3^6 × 4^7 × 6^3 × 7^4 × 8^2 × 9^5.

Hindi: 3^6 × 4^7 × 6^3 × 7^4 × 8^2 × 9^5 का इकाई अंक ज्ञात कीजिए।

A. 6
B. 9
C. 0
D. 2

Answer: A (6)


Q9.

English: Find the unit digit of 111! (factorial 111).

Hindi: 111! (फैक्टोरियल 111) का इकाई अंक ज्ञात कीजिए।

A. 0
B. 1
C. 5
D. 3

Answer: A (0)


Q10.

English: The last digit of the number obtained by multiplying 81 × 82 × 83 × 84 × 85 × 86 × 87 × 88 × 89 will be:

Hindi: 81 × 82 × 83 × 84 × 85 × 86 × 87 × 88 × 89 के गुणनफल का अंतिम अंक क्या होगा?

A. 0
B. 9
C. 7
D. 2

Answer: A (0)

Q11.

English: Find the unit digit of the expression 256251+36528+2285325^{6251} + 36^{528} + 22^{853}.

Hindi: 256251+36528+2285325^{6251} + 36^{528} + 22^{853} का इकाई अंक ज्ञात कीजिए।

A. 4
B. 3
C. 6
D. 5

Answer: B (3)


Q12.

English: Find the unit digit of the expression 55725+735810+2285355^{725} + 73^{5810} + 22^{853}.

Hindi: 55725+735810+2285355^{725} + 73^{5810} + 22^{853} का इकाई अंक ज्ञात कीजिए।

A. 4
B. 0
C. 6
D. 5

Answer: C (6)


Q13.

English: Find the unit digit of the expression 111+122+133+144+155+16611^1 + 12^2 + 13^3 + 14^4 + 15^5 + 16^6.

Hindi: 111+122+133+144+155+16611^1 + 12^2 + 13^3 + 14^4 + 15^5 + 16^6 का इकाई अंक ज्ञात कीजिए।

A. 1
B. 9
C. 7
D. 0

Answer: B (9)


Q14.

English: Find the last digit of the number 13+23+33+43++9931^3 + 2^3 + 3^3 + 4^3 + \cdots + 99^3.

Hindi: 13+23+33+43++9931^3 + 2^3 + 3^3 + 4^3 + \cdots + 99^3 का अंतिम अंक ज्ञात कीजिए।

A. 0
B. 1
C. 2
D. 5

Answer: A (0)


Q15.

English: Unit digit in (264)102+(264)103(264)^{102} + (264)^{103} is:

Hindi: (264)102+(264)103(264)^{102} + (264)^{103} का इकाई अंक ज्ञात कीजिए।

A. 0
B. 4
C. 6
D. 8

Answer: A (0)


Q16.

English: Unit digit of [(251)98+(21)29(106)100+(705)35(16)4+259][(251)^{98} + (21)^{29} - (106)^{100} + (705)^{35} - (16)^4 + 259] is:

Hindi: [(251)98+(21)29(106)100+(705)35(16)4+259][(251)^{98} + (21)^{29} - (106)^{100} + (705)^{35} - (16)^4 + 259]का इकाई अंक ज्ञात कीजिए।

A. 1
B. 4
C. 5
D. 6

Answer: B (4)


Q17.

English: The unit digit in the expansion of (2137)754(2137)^{754} is:

Hindi: (2137)754(2137)^{754} के विस्तार का इकाई अंक ज्ञात कीजिए।

A. 1
B. 3
C. 7
D. 9

Answer: D (9)


Q18.

English: The digit in the unit place of the product (2153)167 is:

Hindi: (2153)167(2153)^{167} के गुणनफल का इकाई अंक ज्ञात कीजिए।

A. 1
B. 3
C. 7
D. 9

Answer: C (7)


Q19.

English: The digit in the unit place of the product (2464)1793×(615)317×(131)491(2464)^{1793} \times (615)^{317} \times (131)^{491} is:

Hindi: (2464)1793×(615)317×(131)491(2464)^{1793} \times (615)^{317} \times (131)^{491}के गुणनफल का इकाई अंक ज्ञात कीजिए।

A. 0
B. 2
C. 3
D. 5

Answer: A (0)


Q20.

English: What will be the unit digit in the product of 71057^{105}?

Hindi: 71057^{105} का इकाई अंक क्या होगा?

A. 5
B. 7
C. 9
D. 1

Answer: B (7)

Q21.

English: What is the unit digit of
329)78

?

Hindi: (329)78(329)^{78} का इकाई अंक क्या होगा?

A. 1
B. 7
C. 9
D. 3

Answer: A (1)


Q22.

English: Unit digit of the number (22)23(22)^{23} is:

Hindi: (22)23(22)^{23} का इकाई अंक क्या होगा?

A. 4
B. 6
C. 6
D. 8

Answer: D (8)


Q23.

English: The unit digit in the product (122)173(122)^{173}is:

Hindi: (122)173(122)^{173} के गुणनफल का इकाई अंक क्या होगा?

A. 2
B. 4
C. 6
D. 8

Answer: A (2)


Q24.

English: The unit digit in the sum of (124)372+(124)373(124)^{372} + (124)^{373} is:

Hindi: (124)372+(124)373(124)^{372} + (124)^{373} के योग का इकाई अंक क्या होगा?

A. 5
B. 4
C. 2
D. 0

Answer: D (0)


Q25.

English: The last digit of (1001)2008+(1002)(1001)^{2008} + (1002) is:

Hindi: (1001)2008+(1002)(1001)^{2008} + (1002) का अंतिम अंक क्या होगा?

A. 0
B. 3
C. 4
D. 6

Answer: B (3)


Q26.

English: Find the unit digit in the product (4387)245×(621)72(4387)^{245} \times (621)^{72}.

Hindi: (4387)245×(621)72(4387)^{245} \times (621)^{72} के गुणनफल का इकाई अंक ज्ञात कीजिए।

A. 1
B. 2
C. 5
D. 7

Answer: D (7)


Q27.

English: The unit digit of the expression 256251+36528+735425^{6251} + 36^{528} + 73^{54} is:

Hindi: 256251+36528+735425^{6251} + 36^{528} + 73^{54} का इकाई अंक क्या होगा?

A. 6
B. 5
C. 4
D. 0

Answer: D (0)


Q28.

English: The unit digit in the product 771×663×3657^{71} \times 6^{63} \times 3^{65} is:

Hindi: 771×663×3657^{71} \times 6^{63} \times 3^{65} के गुणनफल का इकाई अंक क्या होगा?

A. 1
B. 2
C. 3
D. 4

Answer: D (4)


Q29.

English: The last digit of 3403^{40} is:

Hindi: 3403^{40} का अंतिम अंक क्या होगा?

A. 1
B. 3
C. 7
D. 9

Answer: A (1)


Q30.

English: The digit in unit place of the number (1570)2+(1571)2+(1572)2+(1573)2(1570)^2 + (1571)^2 + (1572)^2 + (1573)^2 is:

Hindi: (1570)2+(1571)2+(1572)2+(1573)2 के इकाई स्थान का अंक क्या होगा?

A. 4
B. 1
C. 2
D. 3

Answer: A (4)

Q31.

English: The unit digit in 3×38×537×12563 \times 38 \times 537 \times 1256 is:

Hindi: 3×38×537×12563 \times 38 \times 537 \times 1256 का इकाई अंक क्या होगा?

A. 4
B. 2
C. 6
D. 8

Answer: D (8)


Q32.

English: The unit digit in the product (2467)153×(341)72(2467)^{153} \times (341)^{72} is:

Hindi: (2467)153×(341)72(2467)^{153} \times (341)^{72} के गुणनफल का इकाई अंक क्या होगा?

A. 1
B. 3
C. 7
D. 9

Answer: C (7)


Q33.

English: The unit digit in the product (6732)170×(6733)172×(6734)174×(6736)176(6732)^{170} \times (6733)^{172} \times (6734)^{174} \times (6736)^{176} is:

Hindi: (6732)170×(6733)172×(6734)174×(6736)176(6732)^{170} \times (6733)^{172} \times (6734)^{174} \times (6736)^{176} के गुणनफल का इकाई अंक क्या होगा?

A. 1
B. 3
C. 4
D. 5

Answer: C (4)


Q34.

English: Find the unit digit of the product of all the prime numbers between 1 and 99999.

Hindi: 1 और 99999 के बीच आने वाली सभी अभाज्य संख्याओं के गुणनफल का इकाई अंक ज्ञात कीजिए।

A. 9
B. 7
C. 0
D. N.O.T.

Answer: C (0)


Q35.

English: Find the unit digit of the product of all the elements of the set which consists of all the prime numbers greater than 2 but less than 222.

Hindi: उस समुच्चय के सभी तत्वों के गुणनफल का इकाई अंक ज्ञात कीजिए, जिसमें 2 से बड़ी और 222 से छोटी सभी अभाज्य संख्याएँ हैं।

A. 4
B. 5
C. 0
D. N.O.T.

Answer: B (5)


Q36.

English: Find the last digit of 222888+888222222^{888} + 888^{222}.

Hindi: 222888+888222222^{888} + 888^{222} का अंतिम अंक ज्ञात कीजिए।

A. 2
B. 6
C. 0
D. 8

Answer: C (0)


Q37.

English: Find the last digit of 32323232^{32^{32}}.

Hindi: 32323232^{32^{32}} का अंतिम अंक ज्ञात कीजिए।

A. 4
B. 8
C. 6
D. 2

Answer: C (6)


Q38.

English: Find the last digit of the expression 12+22+32+42++10021^2 + 2^2 + 3^2 + 4^2 + \cdots + 100^2.

Hindi: 12+22+32+42++10021^2 + 2^2 + 3^2 + 4^2 + \cdots + 100^2 का अंतिम अंक ज्ञात कीजिए।

A. 0
B. 4
C. 6
D. 8

Answer: A (0)


Q39.

English: Find the unit digit of 11+22+33++10101^1 + 2^2 + 3^3 + \cdots + 10^{10}.

Hindi: 11+22+33++10101^1 + 2^2 + 3^3 + \cdots + 10^{10} का इकाई अंक ज्ञात कीजिए।

A. 9
B. 7
C. 0
D. N.O.T.

Answer: B (7)


Q40.

English: Find the unit digit of 1324×6857+2413×5768+1234+567813^{24} \times 68^{57} + 24^{13} \times 57^{68} + 1234 + 5678.

Hindi: 1324×6857+2413×5768+1234+567813^{24} \times 68^{57} + 24^{13} \times 57^{68} + 1234 + 5678 का इकाई अंक ज्ञात कीजिए।

A. 4
B. 7
C. 0
D. 8

Answer: A (4)

Q41.

English: The unit digit of the expression
1×2×3×4×5×6×7×8×9×10100\frac{1 \times 2 \times 3 \times 4 \times 5 \times 6 \times 7 \times 8 \times 9 \times 10}{100}

Hindi:
1×2×3×4×5×6×7×8×9×10100\frac{1 \times 2 \times 3 \times 4 \times 5 \times 6 \times 7 \times 8 \times 9 \times 10}{100} का इकाई अंक क्या होगा?

A. 7
B. 9
C. 8
D. N.O.T.

Answer: C (8)


Q42.

English: Find the unit digit of the expression
88892351+22292351+6662359+9999999888^{92351} + 222^{92351} + 666^{2359} + 999^{9999}.

Hindi:
88892351+22292351+6662359+9999999888^{92351} + 222^{92351} + 666^{2359} + 999^{9999} का इकाई अंक ज्ञात कीजिए।

A. 5
B. 9
C. 3
D. None of these

Answer: B (9)


Q43.

English: The last digit of the following expression is:
(1!)1+(2!)2+(3!)3+(4!)4++(10!)10(1!)^1 + (2!)^2 + (3!)^3 + (4!)^4 + \cdots + (10!)^{10}

Hindi:
(1!)1+(2!)2+(3!)3+(4!)4++(10!)10(1!)^1 + (2!)^2 + (3!)^3 + (4!)^4 + \cdots + (10!)^{10} का अंतिम अंक क्या होगा?

A. 4
B. 5
C. 6
D. 7

Answer: D (7)


Q44.

English: The last 5 digits of the following expression will be:
(1!)5+(2!)4+(3!)3+(4!)2+(5!)1+(10!)5+(100!)4+(1000!)3+(10000!)2+(100000!)(1!)^5 + (2!)^4 + (3!)^3 + (4!)^2 + (5!)^1 + (10!)^5 + (100!)^4 + (1000!)^3 + (10000!)^2 + (100000!)

Hindi:
(1!)5+(2!)4+(3!)3+(4!)2+(5!)1+(10!)5+(100!)4+(1000!)3+(10000!)2+(100000!)(1!)^5 + (2!)^4 + (3!)^3 + (4!)^2 + (5!)^1 + (10!)^5 + (100!)^4 + (1000!)^3 + (10000!)^2 + (100000!) के अंतिम 5 अंक क्या होंगे?

A. 45939
B. 00929
C. 20929
D. Can’t be determined

Answer: B (00929)


Q45.

English: The unit digit of the following expression is:
(1!)99+(2!)98+(3!)97+(4!)96++(99!)1(1!)^{99} + (2!)^{98} + (3!)^{97} + (4!)^{96} + \cdots + (99!)^1

Hindi:
(1!)99+(2!)98+(3!)97+(4!)96++(99!)1 का इकाई अंक क्या होगा?

A. 1
B. 3
C. 7
D. 6

Answer: C (7)


Q46.

English: The unit digit of (12345k)72(12345k)^{72} is 6. The value of kk is:

Hindi:
(12345k)72(12345k)^{72} का इकाई अंक 6 है। kk का मान क्या होगा?

A. 8
B. 6
C. 2
D. All of these

Answer: D (All of these)


Q47.

English: The unit digit of the expression
(1!)11+(2!)21+(3!)31++(100!)100(1!)^{11} + (2!)^{21} + (3!)^{31} + \cdots + (100!)^{100} is:

Hindi:
(1!)11+(2!)21+(3!)31++(100!)100(1!)^{11} + (2!)^{21} + (3!)^{31} + \cdots + (100!)^{100} का इकाई अंक क्या होगा?

A. 0
B. 1
C. 2
D. 7

Answer: D (7)


Q48.

English: The last digit of the expression
4×92×43×94×45×96××499×91004 \times 9^2 \times 4^3 \times 9^4 \times 4^5 \times 9^6 \times \cdots \times 4^{99} \times 9^{100} is:

Hindi:
4×92×43×94×45×96××499×91004 \times 9^2 \times 4^3 \times 9^4 \times 4^5 \times 9^6 \times \cdots \times 4^{99} \times 9^{100} का अंतिम अंक क्या होगा?

A. 4
B. 6
C. 9
D. 1

Answer: B (6)


Q49.

English: The last digit of the expression
4+92+43+94+45+96++499+91004 + 9^2 + 4^3 + 9^4 + 4^5 + 9^6 + \cdots + 4^{99} + 9^{100} is:

Hindi:
4+92+43+94+45+96++499+91004 + 9^2 + 4^3 + 9^4 + 4^5 + 9^6 + \cdots + 4^{99} + 9^{100} का अंतिम अंक क्या होगा?

A. 0
B. 3
C. 5
D. None of these

Answer: A (0)


Q50.

English: The unit digit of
234×345×456×567×678×7892^{3^4} \times 3^{4^5} \times 4^{5^6} \times 5^{6^7} \times 6^{7^8} \times 7^{8^9} is:

Hindi:
234×345×456×567×678×7892^{3^4} \times 3^{4^5} \times 4^{5^6} \times 5^{6^7} \times 6^{7^8} \times 7^{8^9} का इकाई अंक क्या होगा?

A. 0
B. 5
C. Can’t be determined
D. None of these

Answer: A (0)


The Questions Source is taken from the Book Rakesh Yadav Advance Mathematics . You can buy from the link below : 
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